Mathematics Questions and Answers October 05, 2020

\fHow have stocks performed in the past? The following table shows performance of a broad measure of stock performance (by percentage) for each decade from the 1830s through the 2000s. Complete parts a through g below. " Click the icon to view the stock performance table. a. Plot the time series. Choose the correct graph below. OA OB. O C. O D.

Revenue .which organization had the greatest total earnings? Explain your reasoning. Mean Earnings Estimate the mean earnings of a player in each organization,Use $19,000,000 as the midpoint for $10,000,001+ Revenue Which organization had the greatest earnings per player? Explain your reasoning Standard deviation Estimate the standard deviation

BS [15 points} Consider the function _;f(x)=.t:4 on the interval [0 , l] . [a] Suppose we divide the interval [0, 1] into :1 equal subintervalsl and use right-endpoints to construct a Riemann sum for the function f- Use the sigma notation to 1write an expression for this Riemann sum. You do not need to simplify it. Note that your answer should be

Please leave CORRECT answer below with no explanation as fast as possible

Questim 1 (1 An object is tallirvg to the h(t) 314 15t2 t objt the at C) oblCzt Ot 428s Otos Ot314s Questim 2 (1 POInt) is n if f(x) fiml sin(z) Of19(z) Of19(z) sin(r) Questim 3 (1 lim lim I Z 19th of of u

A survey was conducted to find the association between price of pizza (per slice) and the volume of sales (in thousands of slices). The summary statistics is as given below: Variable Min Mean Median Max Standard Deviation Sale Volume (in thousands) 12.74 27.1 22.6 102 13.63 Sale Price (per slice in dollars) 2.05 2.85 2.87 3.4 0.28 The regression

SECOND GRADING, 15 SEMESTER NAME: GRADE & SECTION: This is a 30 - point group work The group will be composed of 5 members (Remember CBL students group among themselves, same with OBL students ) You may communicate through whatever is convenient for you. Detach the 2 pages and staple them together. 1. MATCHING TYPE. Choose an expression from

The following table records some values of the functions f and g. 0 2 3 4 5 6 f (a 2 4 5 0 g(x) 8 2 9 -3 -2 Compute the values of the following compositions. For all numerical answers, enter the exact value. If the composition is not defined, enter DNE. Q4.1 1 Point (fg) (3) Enter your answer here Q4.2 1 Point (fog) (3) Enter your answer here Q4.3

[ The following information applies to the questions displayed below.] Campbell Company makes and sells products with variable costs of $24 each. Campbell incurs annual fixed costs of $365,400. The current sales price is $87. Note: The requirements of this question are interdependent. For example, the $252,000 desired profit introduced in

Scientists have found a relationship between the temperature and the height above a distant planet's surface. T (h), given below, is the temperature In Celsius at a height of / kilometers above the planet's surface. The relationship is as follows. T (h) =48.5-2.5h Complete the following statements. Let T"be the inverse function of T. Take x to be

This is a Physical Education course specifically a Research subject. This topic is about Presentation, Analysis and Interpretation of Data. Please help me interpret & analyze the data in the given situation below. QUESTION: 1. A Researcher wants to determine the preparedness and skills in gymnastics of the PE students enrolled at Ateneo de Manila

Write a paper explaining how to work with the following ethical dilemma: You continue to conduct due diligence required to make a sound decision on doing business in the subject country. A colleague of yours who has done business working with the country in question suggests that if you make a bribe to the government official involved, the deal

Set up, but do not evaluate, an integral for the volume of the solid obtained by rotating the region bounded by the given curves about the specified line. y = (x - 2) , y = x+10; about the x-axis

Short Answer 13. If c = [m, n, 1] is perpendicular to both a = [5, 1, -2] and b = [3, -3, 6], find m and n. 14. Given the points X(0, 2, -1), Y(3, 1, 2), and Z(-3, 2, 5), find XY x XZ ) . YZ. Problem 15. A ship is on a heading of 040 at 20 knots and a 2 knot current is flowing from 010. Determine the resultant velocity of the ship, using Cartesian

7. data set: Student GPA Number of Courses Final Score A 3.2 4 85 B 2.7 3 87 C 2.5 3 80 D 3.4 4 97 E 2.2 3 70 F 3.7 5 95 G 3.8 6 99

Figure 1.0 Patient Number Q1. Figure 1.0 shows a hypothetical population with 10 women participating in a uterine cancer 1-year longitudinal study. The X represents a woman who developed the disease. Two of these women had a hysterectomy previous to the start of the study. Calculate the incidence rate per 1000 for this population. Q2. If there are

Omar launches a rocket straight up into the air. The table below gives the height , () of the rocket (in meters) at a few times / (in seconds) during its flight. Time t Height H (1) (seconds) (meters) 0 0 2.3 92 4.6 138 9.2 23 11.5 0 (a) Find the average rate of change for the height from 0 seconds to 2.3 seconds. [ meters per second (b) Find the

Symbolic answers must be entered using notation similar to the examples given below. If you enter decimal numbers for questions that indicate that a symbolic answer is required, it will be marked as zero, regardless of whether the decimal number is correct or not. Integer numbers (positive, negative, and O) are allowed. Below are some examples.

Question #1 Below is a frequency distribution of achievement scores for a sample of at-risk youths. Use the information to answer questions la through Ic. (NOTE THAT "f" IS THE NUMBER OF TIMES A SCORE APPEARS IN THE DISTRIBUTION. FOR EXAMPLE, IN THE DISTRIBUTION BELOW, THE SCORE OF "40" APPEARED 10 TIMES, THE SCORE OF "38" ALSO APPEARS 10 TIMES,

Recall the linear mixed model (also called growth curve model) we fit in class for children?s bone length data. Briefly, bone length (outcome) was measured at ages 8, 8.5, 9, and 9.5. We fit a linear mixed model to predict bone length using a random intercept and slope (for age), and fixed age, i.e., Write out the Xi matrix for this model. Are the

1Accept the first name, middle name, and last name of a person in variables fname, mname and lname respectively. Greet the person (take his full name) using appropriate message.

Capsule Corp wants to see if their daily sales values affect their share price (with a one-week delay). In some chosen week, the daily sales revenues were Z23m, Z4m, Z18m, Z17m, and Z25m (in millions of Zeni Z, the local currency). The daily share prices for Capsule Corp in the following week were Z57.3, Z50.0, Z49.81, Z53.7, and Z60 (again, Z

Evaluate xcos(4y 3x2)dA where R 0, TT.

P QUESTION 13 You plot raw data and get the following distribution. Title VAR00010 20 Mean = 66.65 Std. Dev. = 11.451 N = 120 15 Frequency 10 U 20.00 40.00 60.0 80.00 VAR00010 Answer the following questions based on the distribution above. 1. Describe the shape of this distribution. 2. Is this data parametric or non-parametric? 3. Based only on

a) A research group conducted a study in which a randomly selected group of 378 Canadian adults were surveyed. The responses indicated that 30% of those surveyed owned their own home. What is the population that the research group can draw conclusions about, and what is the sample that they are using? 0 The population is the 30% that owned their

The Brushtail Possum's head length is normally distributed with mean 92.6 mm (4in) and standard deviation 3.6 mm. Find the following relating to this distribution. For nding percentages associated with the normal distribution use the empirical rule. A) What would be the zscore of a head length of 92.6mm? B) What value would have a z-score of 2?

Find the angle between the vectors u = -2i + 3j and v = 2i + 6j + 3k. The angle between the vectors is theta = ____ radians Round to the nearest hundredth

(9) To address this problem study rst Section 1.6 in the textbook; particularly, propo- sitions 6.1 and 6.2. Suppose that 11 sh are caught at a lake that contains 3 distinct types of sh: bass, perch and catsh. (a) How many different outcomes are possible, where an outcome species the num bers of caught sh of each of the 3 types? (b) How many

Question 1 The amount of a soft drink that goes into a typical 12-ounce bottle varies from bottle to bottle. It is normally distributed with mean12.03 ounces and 0.05 ounce. 1.If regulations require that bottles have at least 12 ounces of soda. What is the fraction of bottles that will contain at least 12 ounces of soda? 2.What is the fraction of

8.3 Confidence Intervals for Proportion (Z-table) Express the confidence interval (53.3%,68.7%) in parts p^ and E p=(use decimals not percentages) E=

Find the curvature for the curve r(t) e2ti eat cost j eat sin tk.

How many pairs of shoes does a typical teenage boy own? To nd out, two AP Statistics students surveyed a random sample of 20 male students from their large high school. Then they recorded the number of pairs of shoes that each boy owned. Given is a dotplot of the data. Jackson, who reported owning 22 pairs of shoes, has a standardized score of z =

Hi there I really need help with these questions 1 (0/1) Probability Distribution Table 2 [1/1] X P(X) 3 (0/3) - 2 0.5 4 (0/1) 5 5 (0/3) 6 (0/3) 20 0.2 7 (0/3) 83 0.2 The student council is hosting a drawing to raise money for scholarships, They are selling tickets for $8 each and will sell 500 tickets. There is one $1,000 grand prize, four $400

Calcium is essential to tree growth because it promotes the formation of wood and maintains cell walls. In 1990, the concentration of calcium in precipitation in a certain area was 0.11 milligrams per liter (mg/L). A random sample of 10 precipitation dates in 2007 results in the following data table. Complete parts (a) through (c) below. Click the

Suppose that the random variables Y1, . . . , Yn satisfy Yi = xi + i , i = 1, . . . , n, where x1, . . . , xn are fixed constants, and 1, . . . , n are i.i.d. variables with standard normal distritbution N(0, 1). (1) (10 points) Find the M.L.E., n (1) , of , and show that it is an unbiased estimator of . (2) (10 points) Define another two

Please show work and explain how you arrived at your answer. Thank you. The radius of a circle is increasing at a rate of 9 centimeters per minute. Find the rate of change of the area when the radius is 5 centimeters. Round your answer to one decimal place. The rate of change of the area is

An ethics professor decides to wager with his students as to whether they will pass an online exam. The students each pay $5 to join the wager. If a student earns a C or better on the exam, the professor agrees to pay them $10. The past has shown that the probability of passing this specific exam is 0.32. What is the expectation of payout from the

3 Low rank approximation of the covariance matrix [2.5 pt] For a matrix M, if it admits eigenvalues, we denote them A1(M) 2 12(M) 2 .. . 2 Ad (M). Consider i.i.d. data D = {X1, ..., X,] with X, E Rd and define their mean X,, and their covariance matrix En = = [ ( X, - X..) ( X. _ x. ) and an eigenvalue decomposition En = Vdiag(Mi (E,), A. ().). .

please answer both parts of the question Do Homework - Unit 6 - Definite Integrals & FTC - Google Chrome mathxl.com/Student/PlayerHomework.aspx?homeworkld=619690856&questionld=7&flushed=true&cld=6726382¢erwin=yes AP Calculus BC F Homework: Unit 6 - Definite Integrals & FTC Question 7, 6.3.14-GC

A19. Let f(x, y, z) = yet. How many of the following partial derivatives are correct? of 2100 f at = f, az a2 f Or2 = 1, dy 100 = 0 A: 0 B: 1 C: 2 D: 3 E: 4

8 points) Below is the graph of a function, y = f(r), on the domain [-1, 7). (Note that this graph has a vertical tangent line at (0, 0).) 2 y = f(x) (a) Please fill in the following table by writing a "Y" or "N" into each relevant box. Note: We don't consider endpoints to be critical points, so we've filled that part of the table in for you.

3, ' Mike is playing DND with his friends. The probability of passing a death saving roll is 11/20. a. What is the probability that Mike does NOT pass his death saving roll? (Round to .2 decinmi pinces) b. What is the probability that Mike does NOT pass his death saving rolls three times in a row? {Round to 2 decimoi places) c. What is the

You have conducted a research project and while you investigated the distribution of a continuous variable that you collected, you saw that it had a normal distribution with a PERFECT bell shape. (This is hypothetical because perfect bell-shaped distributions are very rare or even impossible to obtain in real world data). 1)Under the hypothetical

Help please Suppose that your company plans to introduce a new pizza avor and you wanted to determine the preferences of Filipinos through a survey. How are you going to determine who will be your respondents? Describe the details of your sampling method in 10 sentences or less. (Note: Remember that the estimated population is 109 million

c) Consider a trinomial model with r = 0, T = 1, So = 1 and 1.1 with probability ? ST = 1 with probability 0.9 with probability ?. Is the portfolio h = (-1, 1) a super-replication portfolio, a sub-replication portfolio or neither of these for an at-the money call option? d) Let a, b > 0 and let W = (We)to be a Wiener process. What is the

9. The distance in feet of an object from a starting point is given by s(t) = 2t- -5t + 40 where t is the time in seconds. Find the velocity and acceleration at 2 seconds. 10. Find the derivative of the following functions. a. f(x) =2x4/3 -3e-5X +x-7 b. y =3sin(2t) + 4cost 11. Find the equation of the line tangent to the curve f(x) =2x-5In(2x) at

Part C answer should be done like this Please. Calculus and Vectors MCV4U-A Lesson 2. page 13 ................ In the following table, you need to find the value of f(a.+ h) - f(@) for decreasing values of h to estimate the (ath) - a instantaneous rate of change: f(a + h) - 1(a) Value of h ath f(a + h) (a + h) - a 0.1 2.1 (2.1) = (2.1)' -2(2.1) +

Matrix multiplication iteratively. I am new to matrix. While i know how to get r1 = (1/4, 1/8, 3/8, 1/4), I don't know how to get the r3 on ward. Please show me the calculation. System of Linear Equations Let X1,X2,X3,X4 be the PageRank scores (importance) of pages 1,2, 33 4, respectively. By multiplying MG with vector x = X1,X2,X3,X4 X1 1 2 3 4

Question 1) Apollo's Hospital's CFO. Julie, has been concerned of late about the hospital's consumption of medical supplies. To better understand the behavior of this cost, Julie consults with Rhett, the person responsible for Apollo's cost system. After some discussion, Julie and Rhett conclude that there are two potential cost drivers for the

A random sample of 15 college students was asked "How many hours per week typically do you work outside the home?" Their responses are shown on the right. Determine the shape of the distribution of hours worked by drawing a frequency histogram and computing the mean and median. Which measure of central tendency better describes hours worked? Data

A health care professional wants to determine whether individuals with hypertension who take Atenolol have significantly lower systolic blood pressure than individuals with hypertension who do not take Atenolol. For individuals who have not been prescribed Atenolol, the population systolic blood pressure mean is 165 ( = 165).The 69 individuals who

Q1 The table below indicate the norm for students grades in MGSC 301. Grade Excellent Very Good Good Accepted Fail Proportion of Students 0.4 0.3 0.15 0.1 0.05 Q1 The new cohort of 75 students in MGSC 301 indicated the following results: Grade Excellent Very Good Good Accepted Fail Number of Students 31 23 12 7 2 Using p = .05, does the actual

please help Find the average rate of change of the function over the given intervals\" , ;: f(X) = 4x3 + 4; a) [2.41. b) i~ 4.41 K a) The average rate of change of the function f(x) : 4x3 + 4 over the interval [2,4] is [:1 (Simplify your answer.) b b) The average rate of change of the function f(x) = 4x3 + 4 over the interval [ 4,4] is D.

thr Lines For each pair of lines,can you show how to solve them by determining whether they are coincident, parallel and distinct, and could you intersect at a point or skewed without solving for it. Only for the case(s) where the lines intersect at a point, and also determine the coordinates for that POl. 3. Intersections of Lines For each pair

10. Consider square surface (side length of 0.4 m) located in the cz-plane as shown in the diagram below: Calculate the mass flux through that surface for the flow: f = poo (Im) j. Assume vo = 0.1 m/s. 11. Repeat the above calculation if f = pu Im 12. Returning to the cube in problem 5, what is the total mass flow through the surfaces of the cube

lidl must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise A patient receives a 150 mg injection of a drug every 4 hours. The graph shows the amount f(t) of the drug in the bloodstream after t hours. f (t

Can someone help me to answer this question, please and explain it. This is calculus 1 The following work was shown to evaluate lim,_,+ (tan 2x)". There is at least one mistake in the work. Identify the line where the FIRST mistake is made. 1. lim,-0+ (tan 2x) ? - 00 2. y = lim,-o+ (tan 2x)" Iny = limz-0+ x . In(tan 2x) - 0. (-co) 2 sec2 (21) 3.

Randy is an insurance adjuster for a national auto insurance company. Using historical insurance claim data, Randy has built an insurance fraud detection model with the help of a data analyst. Applying the model on the validation data set generated the following confusion matrix. A fraudulent insurance claim is a Class 1 case while a nonfraudulent

A poll for a statewide election has a margin of error of 1.49 percentage points. How many voters should be sampled for a 90% confidence interval? Round up to the nearest whole number. voters Critical values for quick reference during this activity. Condence level Critical value 4023122002344ox32qy7 Jump to level 1 A poll for a statewide election

A marketing researcher wants to estimate the mean amount spent ($) on Amazon.com by Amazon Prime member shoppers. The current amount average, as reported by Amazon.com, is $1,550. The researcher takes a random sample of n = 100 Amazon Prime member shoppers who recently made purchases on Amazon.com and finds a sample mean of = $1,500. Suppose the

Consider the fragment of the convolutional architecture given below: . Input image: 1 x x x y . Convolutional layer: 5 x5 , 2 x 3 number of input and output channels filter size stride . ReLU . MaxPooling: 3x3 ,3 x 3 region size stride . Convolutional layer: 4 -> 6, 4 x 4, 2 x 2 . ReLU . MaxPooling: 2 x 2, 2 x 2 . Flattening (3D to 1D): 6 x 12 x 8

22. Consumer Behaviour (15 Marks} hlarket research companies are often interested in establishing the level of demand for new products. For this question, you are to place yourself in the shoes of a researcher who is trying to: (i) obtain a representative sample of the underlying population who may be interested in buying a new mobile phone, and

[2/4 Points] DETAILS PREVIOUS ANSWERS UDSIAR JU/.MI.J. Given below are the sodium contents (in mg) for seven brands of hot dogs rated as "very g 430 480 360 370 260 560 520 (a) Use the given data to produce a point estimate of u, the true mean sodium content fo u = 425.7143 (b) Use the given data to produce a point estimate of of, the variance of

The point coordinates -5,0 =-5,-3 =-1,1 =2,-2 =5,3 =0,5 = Awwm01.bcc.cuny.edu Bronx Community College Math 23.5 Fall 2022 Prof M Wally - Google Slides (1 point) C WeBWork : 2022_Fall doty B -6 Fo -4 In the graph above, the x and y values are shown on the axes. Find the coordinates of each of the marked points. Ask for a Hint The point with

Problem 4: Consider the following information on a product assembled from five components: Component Quantity Cost per unit L M H $19 $24 $31 $20 $26 $29 N - W - U $12 $17 $31 $37 $47 $67 $41 $46 $51 Assuming the above costs are normally distributed. A. Estimate the cost of a product. B. What is the probability that the cost of component D is less

KIN 270 STATISTICS IN THE HEALTH PROFESSIONS: THEORY AND PRACTICE HOMEWORK ASSIGNMENT #6 - ONE-WAY ANOVA DUE: Monday October 31, 2022 @ 10AM GRADE: / 30 POINTS SECTION 1: ONE-WAY ANOVA [16 POINTS] A study was conducted to compare the reaction of three different groups of athletes. Specifically, \fGM203.78+195.23+204.77 603.78 9.15 24+20+22 66

Performance in Statistics with Software Application A. Answer the following item as neatly as possible. 1. Give the null hypothesis (H.) and alternative hypothesis (H.) under two-tailed test. a. The mean amount / of rainfall per year is 72 inches. b. The mean amount / of books borrowed per day per library is 250 RMB. c. The mean temperature /,

Before every ight. the pilot must verify that the total weight of the load is less than the maximum allowable load for the aircraft. The aircraft can carry 39 passengers. and a ight has fuel and baggage that allows for a total passenger load of 6,396 lb. The pilot sees that the plane is full and all passengers are men_ The aircraft will be

Problem #2: Evaluate the following integral as a power series. [ In(1 + x) dx (A) E (-1)"x6+7 (B) (-1)Axln+5 00 (D) pin + 1 71=0 (n +1)(6n +7) (C) - 2 xin+ 5 00 (-1)" xon+6 71=0 (n + 1)(7n + 5) 1=0 (n + 1)(7n + 5) (7n + 1)(7m) (E) Z 1=0 (n +1)(6n +6) (F) - ron +6 -6n + 7 IM IM8 (n +1)(6n +6) (G) - (67 + 5)(6m) (H) - (n+1)(6m +7)

Find the relative extreme points of the function, if they exist. Then sketch a graph of the function. 15 G(X) - dentify all the relative maximum points. Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice! A. The relative maximum point(s) is/are (Simplify your answer, Use integers or fractions for

(4.2) Assume that a Bayesian classifier returns the following outcomes for a binary classification problem, which are sorted by decreasing probability values. P (resp., N) refers to a record belonging to a positive (resp., negative) class. Tuple # Class Probability 1 P 0.90 2 P 0.80 U 3 0.70 4 N 0.60 P 0.55 P 0.54 N 0.53 his 8 N 0.51 9 P 0.50 10 N

1- For f(x)=3xV(4-x2) determine the absolute max and min values within its domain. (4marks) 2- A hot-air balloon is moving vertically up and down so that its height relative to the ground is given by h(t)=t3 - t2 t +1, where "h\" is measured in kilometers and t In hours. If the height h was recorded between the first and the second hour of motion

1) A certain building is built on level ground. A Physics student is standing on the roof of the building and launches a large round stone off the building. The vertical height (in feet) of the stone, t seconds after being launched, is given by the function h (t) = -16t2 + 35t + 500. Complete the following: a) The height of the building is feet.

Exam 3 166 points possible 2/12 answered O Question 9 A study was conducted that measured the total brain volume (TBV) (in mm ) of 6 patients that are considered normal and 6 patients with schizophrenia. The table below contains the TBV of the normal patients and the TBV of schizophrenia patients. Is there enough evidence to show that the patients

The mayor is interested in finding a 95% confidence interval for the mean number of pounds of trash per person per week that is generated in the city. The study included 194 residents who mean number of pounds of trash generated per person per week was 34.1 pounds and a standard deviation was 8.4 pounds. Round all answers to three decimal places

John plots the point with the polar coordinates (3, 5x ). How does he plot this point? Drag a value or phrase into each box to correctly complete the statements. John first determines which line the angle of rotation places the point on. This line tells John that the point must lie in if r is positive or if r is negative. The radius of 3 tells

38 Out of 300 people sampled, 24 had kids. Based on this, construct a 95% confidence interval for the true population proportion of people with kids. Give your answers as decimals, to four places39 v ( 1* Assume that a sample is used to estimate a population proportion ,9. Find the 9033 confidence interval for a sample of size 22? with 169

L (+) ? - 5 - 4+ St 2= 4 15 1) R = 28 32 16 2 1 : 0 1 ton 2 4x to plane 1 1 ) ng = 5 10 2 V - 2 20 4 7.5 ile ) ny = 1.5 - 6 7.5 . 1 = - 4.5 inhi8 - 2- 10 : un : // to it I to plane K - - 2 2 2Assignment02: Problem 22 (1 point) Consider the line L(t) = (-5 - 4t, 1 + t, 5t). Then: L is parallel to the plane 28x + 32y + 16z = -4 L is parallel v to

This is in regards to SPSS. I have the variable employment status and the value labels are Ounemployed 1-employed 2- dont want to answer. My question is, what do I do to get spss to include all the 0's representing unemployed. currently the output just displays employed and 'dont want to answer' because they are above 0 missing the employed data

A /05-2mL sample of gas has a temperature of _75 'C and a pressure of (3 atm. What temperature would be needed for the same amount of gas to fit into a 56/2ml flask at standard pressure? (Amount of moles is held constant)

Please help me with this problem. Review & Preview 6-141. Find a cosine function that has a maximum at (2, 5) and a minimum at (4, 2). 6-142. If sin x = - 4 , x E [n, "], find exact values for the five other trigonometric functions without finding x. 6-143. y = sin x, y = cos x, and y = tan x are all functions that have restricted ranges. Give the

Declining availability of industrial land and shifting consumer demands are driving the average warehouse clear heights (how high the warehouse ceiling is from oor to ceiling) to new levels. Canadian Building Corporation investigated and reported that the mean clear height for a warehouse in Hamilton is 30 feet. Suppose the clear heights are

. Conrm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x. (2 points) 3 and 9(X) = x f(x) = % Describe the transformation of the graph of f into the graph of g as either a horizontal or vertical stretch. (2 points) f(x) = J; and 90:) = Jo.5x

Argue that the glacial varves series, say xt , exhibits heteroscedasticity by computing the sample variance over the first half and the second half of the data. Argue that the transformation yt = log xt stabilizes the variance over the series. Plot the histograms of xt and yt to see whether the approximation to normality is improved by

16.The temperature T {in degrees Fahrenheit) of a person during an illness is given by m) = 4.11:2 +1.2: + 93.5. where r is the time in days. c. Find 7(a) and interpret your results. d. Find T'{8) and interpret your results. 11A company that produces snowboards. which are seasonal products. forecasts monthly sales for one year to be S = 74.50 +

8. Let M(t) = e dele. Find the values of (a) u (b) 02 9. In a large city, telephone calls to 911 come on the average of two every 3 minutes. If one assumes an approximate to Poisson process, what is the proba- bility of five or more calls arriving in a 15-minutes period

1 point A drug company approaches me with a proposal to test if a pill will help keep students awake in class. We select two groups of students at random and give them the pills at the beginning of class while someone observes whether they nod off. Here are the data: Placebo Pill Stayed Awake 11 10 Fell asleep 18 9 How many degrees of freedom are

Question 1 of 5 > View Policies Current Attempt in Progress Evaluate the following triple integral in spherical coordinates. f (p, 0, 4) = sin(4), TT over the region 0 5 0 5 21, 0 5 4 5 7, 3 View Policies Current Attempt in Progress Use cylindrical coordinates to nd the volume of the solid enclosed by the paraboloid z = 3:2 | y2 and the plane z =

Prove that If X n r 2 X , then X n r 1 X , r 1 r 2 , r 1 1

Let p = Tu where w is the solution of the optimization problem defined by Eqn. 7.6 with the contraints given by Eqn. 7.5 on page 328 in the Bishop's Pattern Recognition and Machine Learning book. Note that p is the margin for the maximum-margin hyperplane. Show that p is given by = 2L(a), (1) where L(a) is defined by (7.10) on page 329 in the

High blood pressure is unhealthy. Here are the results of one of the studies that link high blood Select one answer. pressure to death from cardiovascular disease. The researchers classified a group of white 10 points males aged 35 to 64 as having low blood pressure or high blood pressure, then followed the subjects for 5 years. The following

summarize data types. Define the role of statistics in research. Define reliability and validity in research. Explain how these concepts are relevant to the data analysis process. Briefly summarize the following data types: Descriptive statistics Correlation statistics ANOVA procedure Chi-square test Explain the purpose of each data type. Explain

I am not sure how to answer this question. Please help! Write out the first eight terms of the series to show how the series starts. Then find the sum of the series or show that it diverges. 2 5 - on n = 1 43 403 3643 32803 The first eight terms are a, = a3 = g 81 729 a4 6561 a5 = 5 , a6 = 5 , a7 = 5 , and ag = 5 (Simplify your answers.) Find the

1. Determine the derivative of the following functions. You can use the derivative rules from this section and not find these derivatives by first principles. Simplify first, if necessary, and then find th derivative. a. f(x) = 3x2 - 5x5 + 20x9 +7 b. g(x) = 2Vx - Vx + Vx4 -x-3 c. p(x) = 3* - 2ex - -sin (2x) + 3 cosx d. m(x) = (3x + 2)2 e. s (t ) 1

webworkmat 167h005spring2022lee homework6 5 Homework6 Problem 5 Previous Problem Problem List Next Problem (1 point) Part 1 Limit of a difference quotient Suppose f(x)822x9. Evaluate the limit by using algebra to simplify the difference quotient (in first answer box) and then evaluating the limit (in the second answer box). f(1h)f(1) lim h0 h

Most households in North America now own at least one SUV car. A market research firm conducted a survey and estimated that the probability of owning an SUV car is 59% for households with kids and 51% for households without kids. Suppose that a representative community with 1400 households is selected, of which 900 households have kids and the

Suppose we have a discrete random variable X. whose range is given in the following set: (1. 2, 3, 4. 5] Also suppose the following is a probability distribution defined as follows for all values in the range of X, except for 2 P(X-1) = 3/16 P(X-2) - ? P(X-3) - 1/16 P(X-4) = 4/16 P(X-5) - 2/16 (1) Then P(X-2) must equal Type your answer as a

Residents of community want to have a speed bump installed on one part of the road because they believe drivers go faster than the speed limit on that part. Which statistical method would be most appropriate to use? Group of answer choices: Hypothesis test Binomial distribution Confidence interval with the posted speed as the mean Regression

Consider the following Markov chain model of an intemet retailer's marketing database. The state represents the classication of a customer at the beginning of a month. The set of possible states is {P, I, R, F, U} where: P represents a potential customer who has never purchased; I, R and F represent customers who purchase infrequently, regularly

If det A =15, det Ax = -15, det Ay = 30 and det Az = -45. Using Cramer's Rule the value of Z is given by: O a. -1 O b. 3 O c.1 O d. -3In inventory control system, which of the following cost is classified as an ordering cost? O a. Cost of production stoppage O b. Transportation cost O c. Interest on capital invested in stock O d. Perpetual