Mathematics Questions and Answers February 08, 2020

We want to estimate the mean salary in Minnesota. a. How many jobs must be randomly selected for their respective mean salaries if we want 95% confidence that the sample mean is within $125 of the population mean and = $1150. CV (z) sigma E n

A quadratic function y = f(x) is plotted on a graph and the vertex of the resulting parabola is (- 4, - 5) . What is the vertex of the function clefined as g(x) = f(- x) + 3

Find the derivatives of the following function using its definition. FORMULA: 1. f(x) = 2 V3x f (x + Ax) - f(x) 2. f(x) =1 f' (x) = lim AT+0 5x2 AX 3. f(x) = -2x2 + 5x -3

In its 2016 Auto Reliability Survey, Consumer Reports asked subscribers to report their maintenance and repair costs. Most individuals are aware of the fact that the average annual repair cost for an automobile depends on the age of the automobile. A researcher is interested in finding out whether the variance of the annual repair costs also

BASIC CALCULUS ( WITH SOLUTION LIKE IN THE PICTURE) BASIC CALCULUS: PROBLEM SET 2 Relate the derivative of a function to the slope of the tangent line Example: Determine the equation of the tangent line to f(x) = x - 9 at (2,-5). Solution: First. determine the slope of the tangent line to the function f: m= lim -= 1im -9-[-5 *-2 = lim 1-2 = lim

[2 pointsI In 2018, the city of Ithaca took a census where they asked residents which coffee shop was their favorite: 329E preferred WSW Bagels [CTR], 25% preferred m! Coffee, and 43% preferred Ithaca Coffee lCompany. In 2019, Cornell asked a simple random sample of 300 graduate students to answer the same question. Of the students surveyed, 93

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Statistics Definitions *DO NOT DO THE DEGREE OF COMFORT WITH USING LEVEL Metric Definition Used for (Purpose) *Degree of Comfort with Using Level Alternative Hypothesis Bar Chart Chi-square Common Variation or Common Cause Correlation Coefficient Data Descriptive Statistics Dependent Variable Inference Inferential Statistics Linear Regression

9. Inference about the difference between two means - Matched pairs experiment Are store-brand grocery items actually cheaper than their name-brand counterparts? A data set constructed by Michael Mckay, a business statistics student at Fairfield University, will help you answer this question. Michael randomly selected a sample of products and then

What is the standard deviation and Variance HW Score: 11.11%, 1 of 9 points Part 2 of 4 O Points: 0 of 1 Save Listed below are foot lengths in inches for 11 randomly selected people taken in 1988. Find the range, variance, and standard deviation for the given sample data. Include appropriate units in the results. Are the statistics representative

please see both attachments to see both parts of the question.

We Assign Sketch the region of integration. 8 In(x) f(x, y) dy dx 1 In (8) 2 2 3 4 5 6 7 7 In (8 In (8 In (x) orx y In (x) or x ey 2 2 3 4 8 9 9 ooo 000 10 10 5 6 y In (x) or x ey 3 4 5 y In (x) or x ey 3 4 6 7 7 8 8 9 io 11 12 9 10 11 12 MacBook Air

A cylindrical tank standing upright (with one circular base on the ground) has a radius of 5 cm for the base. How fast does the water level in the tank drop when the water is being drained at 26 cm3/sec? Note that the volume of a cylinder)is V = 7rr2h where r is the radius of the base and h is the height of the cylinder. (Do not need "-" in the

In the following scenarios, please describe the the sample space and also indicate the total number of outcomes (if nite). It is not necessary to use rigorous mathematic notations to describe the sample space, but your answer should be precise and cover all the possible outcomes. 1) You are asked to write down the month of your birthday as shown

Problem. 10 : Find the total differential of the function f(x, y) = 32 + 4 xy + 2x ? df = ( da + ( dy Problem. 11 : Find the total differential of the function f(x, y) = (342+62)3 ? df = ( da + ( dy Problem. 12 : Find the total differential of the function f(x, y, z) = 4 xy5 22 df = da + dy + dz Problem. 13 : Use differentials to estimate the

como se resolveran estos ejercicios ? Para los siguientes cinco ejercicios debe utilizar la Tabla normal de probabilidades. Un articulo reciente informa que el costo promedio de la mano de obra de reparar una bomba de agua es $90, con una desviacion estandar de $22. La empresa Ponce Plumbing Repairing realize una reparacion de una bomba por la que

Hi;I need help finding out if my answer here is right or wrong? 7 Chapter 6 t-Tests: Testing Two Mean Dierences 6.1. A two-sample t-test would be appropriate for which of the following directional hypotheses? a.Hl: ftasM2 b'HI: will: *C.H]: uluz d.H|: M1>M2 6.2. Which of the following is not an assumption for the t- test? *a. Normally distributed

) A bottling machine fills up cola for 330ml cans. It is noted that the volume of the cola filled follows a normal distribution. To test the consistency of the machine, 20 discs are randomly selected and the mean volume is 327ml while the standard deviation is 2.8ml. What is the 99% confidence interval for the mean volume of the cola filled? (b) A

8. The billing department of a national cable service company is conducting a study of how customers pay their monthly cable bills. The cable company accepts payment in one of four ways: in person at a local office, by mail, by credit card, or by electronic funds transfer from a bank account. The cable company randomly sampled 400 customers to

Subject treatment1 treatment2A. 12. 14b. 6 16c. 8. 10d. 9. 11 use two tails, 0.5 alpha level. For the following data from a repeated-measures study: a. Compute and record Mp. b. Compute and record the estimated standard error for the mean difference c. Compute and record the Computed T d. Compute and record the Confidence Interval Mean Difference

9.5. B: The cylindrical shells method. Problem 9.32. Compute the volume (by both the slicing and the cylin- drical shells method) of the solid obtained by revolving around the y : 5 the region between the graph of y : 1 2:2 and y : 3332. Problem 9.33. Compute the volume (by both the slicing and the cylin- drical shells method) of the solids

Salt water with a density of 6: 0.25 g I cm2 ows over the curve r{t) = Hi + 81], U s t s 3, according to the vector eld F= 5V, where v = xyi +{y )0] is a velocity field measured in centimeters per second. Find the ow of F over the curve r(t)_ D|:| ..... _ grams per second grams per centimeter centimeters per second

Calculate visits per employee and the cost per visit for each week. Calculate the mean and standard deviation for these measures for this six-month period. Explain how these statistics are useful in understanding the trend in total outpatient physician costs per Sparks Interactive employee. Week Total Costs of Physician Visits # Visits # Employees

1. Plot the point with the indicated polar coordinates.2. Determine the rectangular coordinates of each point with the indicated polar coordinates.3. Find a polar equation that has the same graph as the given rectangular equation.4. Encuentre una ecuacin rectangular que tenga la misma grafica que la ecuacin polar dada. Ejercicios Coordenadas

A) Choose one are : 36%, 56%, 75%, 84%, 89%B)!" Choose one are 36%, 56%, 75%, 84%, 89% A real estate company is interested in the ages of home buyers. They examined the ages of thousands of home buyers and found that the mean age was 49 years old, with a standard deviation of 10 years. Suppose that these measures are valid for the population of

i) [5 marks] Use the change of variables = r cos 0 y = sin 0 to compute the double integral I = (x' + 1) dx dy, u where U is the part of the ellipse {(x, y) E R2 : x2 + 4y?

When can we use a normal distribution to approximate a binomial distribution? a. when n > 5 b. when n * q is greater than or equal to 5 c. when n * p is greater than or equal to 5 d. when both n * p and n * q are greater than or equal to 5 Two events are independent if a. P (A|B) P (A) and P (B|A) P (B) b. P (A|B) = P (A) and P (B|A) = P (B)

please help in this Solve for x in degrees when x is between 0 and 360 in the following equation: 2sin (2x) - sin(2x) - 3 = 0

A bag is filled with 7 black (B) marbles and 3 red marbles (R). You draw marbles from the bag in pairs.Denote the four possible outcomes of drawing the marbles with the letter pairs BB, BR, RB, and RR. Compute the probability of the following outcomes.BB: BR: RB: RR: In each outcome we count the number of black marbles. Compute the probabilities

Make the appropriate conclusions regarding the relationship between X and Y' using the following SPSS output box. Coefficients a Unstandardized Coefficients Standardized Coefficients Model B Std. Error Beta t Sig. 1 (Constant) 145.260 8.926 18.256

A shoreline observation post is located on a cliff such that the observer is 350 feet above sea level. The observer spots a ship approaching the shore and the ship is traveling at a constant speed. To input your angle measures in degrees, use the functions sind (5), cosd (5) and tand (5), instead of sin (5), cos (5) and tan (5). Angle of

Question 5 5 pts ) 1 0 Details -28 Evaluate the integral: x2 x2 + 81 (A) Which trig substitution is correct for this integral? Or = 9 sin(0) Or = 9tan(0) Or = 81 sin(0) Of = 81 tan(0) Or = 81 sec(0) Of = - 28 sec(0) (B) Which integral do you obtain after substituting for a and simplifying? Note: to enter 0, type the word theta. de (C) What is the

A teacher at a small university is trying to determine if students learn better when the teacher writes lecture notes on the board or when the teacher uses electronic slides for lecture notes. (Assume the students are not given any note outlines to use, so they start with blank pieces of paper to take notes in both situations). The teacher is

iness Statistics Jan22 Y2 $2: 0 x BE Business Statistics Final OSA.pdf x zi/Downloads/Business%20Statistics%20Final%20OSA.pdf D Page view A Read aloud (T) Add text Draw Highlight 15. The duration of flights between two locations is normally distributed with a mean of 6 hours and a standard deviation of 45 minutes. Approximately what percentage of

A baseball diamond is a square 9090 ft on a side. A player runs from first base to second base at 1212 ft/sec. At what rate is the player's distance from home base increasing when he is half way from first to second base?

E Test: Test 2 [Lessons 08-12] Question 17 of 19 Find all the complex roots. Write the answer in exponential form. Next The complex fourth roots of - 25 i. Zo = (Simplify your answer. Type an exact answer, using x as needed. Use integers or fractions for any numbers in the expression.) 21 = (Simplify your answer. Type an exact answer, using x as

The average amount of money spent for lunch per person in the college cafeteria is $7.02 and the standard deviation is $2.93. Suppose that 41 randomly selected lunch patrons are observed. Assume the distribution of money spent is normal, and round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ N( 7.02 2.93 b.

Suppose that insurance companies did a survey. They randomly surveyed 410 drivers and found that 310 claimed to always buckle up. We are interested in the population proportion of drivers who claim to always buckle up. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In

Elizabeth brought a box of donuts to share, There are two-dozen (24) donuts in the box, all identical in size, shape, and color. Three are jelly-filled, 7 are lemon-filled, and 14 are custard-filled, You randomly select one donut, eat it, and select another donut. Find the probability of selecting two jelly-filled donuts in a row. (Type an integer

Please explain your answer! Thanks for help! Question 1. Suppose that f is a function whose domain is R and satisfies the following properties: . f(x) =0 when x 1 . f(0) = 1. 1. Define the function f on the interval [-1, 1] such that f is everywhere continuous. 2. Suppose that f must have the form of a quartic polynomial on [-1, 1]; that is, f(x)

Name: Homework #2 Frequency Distribution The 20 brain volumes () listed below: EM 1. Construct a frequency distribution, a relative frequency distribution, and a cumulative frequency distribution using six classes. Relative Cumulative a... a) Construct a frequency histogram graph. Describe the shape of the graph. b) Construct an Ogive graph

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Plot y dx and estimate the area using left rectangles. Choose the correct plot below.

Can Someone Help Explain Step-by-Step on how to get the answers to this question, please? *Note: if you can add the equations for each step to make it easier for me to follow, I would appreciate it. Thank You 27. False alarm: The numbers of false fire alarms were counted each month at a Page 596 number of sites. The results are given in the

From January through June 2022, NSU supported various prosocial activities. In January, 157 adult residents attended a series of leadership development workshops and 15 youth attended an art workshop. In February, the resident leaders hosted a dinner where 42 residents attended. In addition, 36 youth participated in STEAM classes during the month

Omithologists, scientists who study birds, tag sparrow hawks in 13 different colonies to study their population. They gather data for the percent of new sparrow hawks in each colony and the percent of those that have returned from migration. Percent return: 80; 66; 84; 55; 73; 62; 52; 44; 62; 42; 60; 46; 38 Percent new: 6; 9; 8; 15; 12; 15; 16;

\f18. '7 At current growth rates, the Earth's popu- lation is doubling about every 69 years. If this growth rate were to continue, about how many years will it take for the Earth's population to become one-fourth larger than the current level? \f24. For a 14-inch pizza, find the area of a slice with angle = radians.32. What is the slope of the

Assignment 5: Correlation and Regression (20 points) IMPORTANT: Do not to round imermediate calculations. If It's necessary, round a number in 5 decimal places. Suppose you are interested in the relationship between job experience and job stress. From a sample of 10 correctional officers, you collect data on the number of years of correctional

\fQuestion 16, 10.3.18 HW Score: 70.93%, 14.19 of 20 points Part 2 of 4 Points: 0.92 of 1 Save It has long been stated that the mean temperature of humans is 98.6"F. However, two researchers currently involved in the subject thought that the mean temperature of humans is less than 98.6"F. They measured the temperatures of 43 healthy adults 1 to 4

consider the model GPA = 0 + 1 ACT + u Using the data below compute fitted values and residuals for each observation to determine the sum of the residuals. Student GPA ACT 1 2.8 21 2 3.4 24 3 3.0 26 4 3.5 27 5 3.6 29 6 3.0 25 7 2.7 25 8 3.7 30

If f(x) = (3x

If f(x) (3x2 5)52 , compute the first and the second derivative of f(x).

(e) (10 points) Now assuming the data are one-dimensional, the training dataset consists of two samples x1 = 0.5 and x2 = 1, and the test sample x = 0.75. The true parameter ?? 0 = 0, ?? 1 = 1, the noise variance is given by ?2 1 = 1, ?2 2 = 1. Plot the MSE (Bias square plus variance) as a function of the regularization parameter ?. (f) (5 points)

Please help with the one that are red out in boxes please write answers in boxes.thank you \f08:00 Thu Jul 14 .. . 29% webwork2.math.umb.edu Consider the function f (a) = - 6+ ex Get Then f' (ac) = ( 6 + ex ) 2 The following questions ask for endpoints of intervals of increase or decrease for the function f (a). Write INF for co, MINF for -oo, and

Sketch the graph of fand use your sketch to nd the absolute and local maximum and minimum values of f. (Enter your answers as a commaseparated list. If an answer does not exist, enter DNE.) 1'00 = sin(x), 1 s x s 1 2 2 absolute maximum value 1 V absolute minimum value 1 u! local maximum value(s) 0 X local minimum value(s) 0

Find the area of the shaded region. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. Click to view page 1 of the table Click to view page 2 of the table. The area of the shaded region is (Round to four decimal places as needed.)

Help with this question Suppose Fatema found the following summary statistics from two different, independent, approximately normally distributed populations, both with variances equal to o: 1. Population 1: 21 = 128.9, 81 = 15.85, n1 = 20 2. Population 2: 2 = 168.5, 82 = 16.43, n2 = 14 Fatema wants to find a 94% confidence interval for /42 - #1.

Problem 10-31 A long-distance telephone company uses a fiber-optic network to transmit phone calls and other information between locations. Calls are carried through cable lines and switching nodes. A portion of the company's transmission network is shown here. The numbers above each arc show the capacity in thousands of messages that can be

For the data set 1 2 3 4 7 7 7 8 11 12 12 15 15 16 17 17 17 18 20 20 22 24 24 25 26 26 26 26 27 30 32 32 33 34 34 36 38 39 43 44 45 46 47 47 48 51 52 52 53 54 54 54 55 56 58 58 59 61 63 65 65 67 69 70 73 75 75 76 77 77 79 80 81 82 82 Send data to Excel Part: 0 / 2 Part 1 of 2 (a) Find the 41" percentile. The 41" percentile is 32 X Part: 1 / 2 Part

egcc student portal - Search X Gateway (Student Portal) - East X 5.5: Graded Homework X + https://egcc.instructure.com/courses/33732/assignments/979985 FA22_FOURTH Due Sunday by 11:59pm Points 14 Submitting an external tool Available after Nov 7 at 12am Home Announcements 5.5: Graded Homework Score: 0/14 0/14 answered Syllabus Question 14

Why vertex is (24,70)? I see it on (27,70). What am I missing? At t = 30 . Assume again a parabolic path between venter (24, 70 ) and point ( 30, 300 ) . y = a (t- 24 ) + 70 . put point ( 30,300 ) in the above eq). 3 300 = a (30 - 24) +70. 300 = 360 +70 =) a = 300 - 70 230 = 6 . 38888 -- = 6.39 . 36 36 Hence 2 6:39 ( 2- 24 ) 2 + 70 .. The graph

Itamath.com/app/student/solve/15374424/untCircleFindCoordinate M Gmail Classes U Cosmetics, Fragra YS Yesstyle S SHEIN Nike. Just Do It. N... PINK - Victoria's S... N Watch help video The point P = (-3, y) lies on the unit circle shown below. What is the value of y in simplest form? X (1, 0) (Note: the figure is not drawn to scale) Answer: Submit

Evan Lysacek was the 2010 Olympic Gold champion in figure skating. In 2004, the ISU (International Judging System) replaced the 6.0 system with a new system in an attempt to make the scoring more objective. Axel jumps are given the following base values. Rotations in a Jump Base Value 1 1.1 2 3.3 3 8.5 4 15.0 Lysacek is currently 31 years old and

In a colony, there are 55 members. Every member brings an umbrella there and take one randomly one by one when they leave. What is the chance that you get your own umbrella if you are the last one leave?

Full steps please 1. (12 marks) A box contains 15 black and 20 green balls. One ball at a time is drawn at random, its color is noted, and the ball is then replaced in the box for the next draw. a. Find the probability that the first green ball is drawn on the fifth draw. b. Find the probability that the second and third green balls are drawn on

You are told that the following values represent four different correlation coefficients, r, labelled A to D as follows: A = 0.95 B = 0.3 C = 0.90 D = 0.88 Which of the following statements is correct? C , represents a very strong, downward sloping, linear relationship. A , represents a very strong, upward sloping, linear relationship. D ,

Suppose that on a certain section of SRP with a posted speed limit of 65 kph, the speeds of all vehicles have a bell-shaped distribution with a mean of 72 kph and a standard deviation of 3 kph. Using the empirical rule, find the percentage of vehicles with the following speeds on this section of SRP. 63 to 81 kph 69 to 75 kph b) Using the

Complex analysis: Please help me with 3 & 4. Problem 2 is quite straightforward. Consider the two following curves. Curve 71 consists of the line segment from the origin to R {on the real mos}T followed by the arc to Hi {on the imaginary axis}, then the line segment back to the origin. Curve 1-; consists of the line segment from the origin to 11R,

Please show how it it's solve Medical researchers are interested in determining the relative effectiveness of two drug treatments on patients with a chronic mental illness. Treatment 1 has been around for many years, while treatment 2 has recently been developed based on the latest research. The researchers chose two independent test groups. The

Help with STATS Setup: We are interested in the proportion of men in the general population who are color blind. In a study of color perception done in Kansas City, 390 men are tested, and 39 are found to have red;Ir green color blindness. A93 35 confidence intewal is constructed for the population proportion of men who are color blind. Questions:

The duration spent by Miss Jenny to bake a swissroll is normally distributed with a mean of 45 minutes and a standard deviation of 15 minutes. Miss Jenny booked Lalarun service to deliver her swissroll to customer once she starts baking. Lalarun service will be at Miss Jenny place in 50 minutes time. (i) What is the probability that the Lalarun

tal - Search X Gateway (Student Portal) - East X 5.5: Graded Homework X + egcc.instructure.com/courses/33732/assignments/979985 URTH Due Sunday by 11:59pm Points 14 Submitting an external tool Available after Nov 7 at 12am uncements 5.5: Graded Homework Progress Score: 0/14 0/14 answered us Question 8

C webassign.net/web/Student/Assignment-Responses/last?dep-30133530 M Inbox - kolege246... G Google Ad Grants e... Taxpayer Bill of Rig... Screenshot of the F... Partner Entry | Roge... ) Army NG G1 Portal 19. [-/1 Points] DETAILS DAVISPRESTAT1 1.1.010. MY NOTES ASK YOUR TEACHER Round 0.00246 to three decimal places. Need Help? Read It Watch It 20.

Given lim(x2 + 2) = 00 a) Give a formal (geometric and algebraic) definition of the given limit. b) Use algebra to find N in terms of M, according to the appropriate formal definition c) Verify and support your answer with labeled graph

The average age at which adolescent girls reach their adult height is 16 years. Suppose you have a sample of 27 adolescent girls who are developmentally delayed, and who have an average age at which they reached their adult height of 17.1 years and a sample variance of 36.0 years. You want to test the hypothesis that adolescent girls who are

Question 1 Suri finds that ice cream sales decrease on a rainy day. The probability that it rains given that it rained the previous day is 50%. The probability that it will rain following a fine day is 20%. a) The weather forecaster predicted a 40% chance of rain on Friday. Draw a tree diagram to show all the possible outcomes of weather for the

The DF-GLS test for a unit root has higher power than the Dickey-Fuller test. Why should you use a more powerful test? O A. A more powerful test improves the analyst's ability to distinguish between a unit AR root and a root less than 1. O B. A more powerful test is more likely to reject the null hypothesis when the null hypothesis is false. O C.

The z confidence interval and test are based on the sampling distribution of the sample mean .x. The National Survey of Student Engagement (NSSE) asks college seniors to rate how much their experience at their institution has contributed to their ability to analyze numerical and statistical information. Ratings are on a scale of 11 to 7,7, with 77

2. The problem dealt with in Question 1, Tutorial 5, is re-considered here. The results from fitting a main-effect model are given below: Estimate Std. Error t value Pr(>It[) (Intercept) 21.1393 0. 5228 40.433

difference quotient show the full solution answer the Example 7 a and b b.) f(2h) C.) f ( x ) + f (b) d.) f(2x) e.) f( x+h) You Luden +44 Mathematical Language and Symbols Functi Example 7. Find f(xth)-f(x) , where h+0; if h a.) f(x) = 4x2-5x+7 b. ) f (x) = Vx Mathematical Language and Symbols Func

m Southern New Hampshire University - 7-3 Exam Two X G & https://snhu.mobius.cloud/modules/unproctoredTest.QuestionSheet Manga Manga2 " channel " Dashboard School Computer setup ui y 6 0 Pap HugCA ND 2 Q P 6 6 Usefull tips Other favorites Help | Zachary Bowen (zachary.bowen1@snhu.edu) | Logout Gradebook External B mobius m / MAT-225-H3815 22EW3

This question: 5 point(s) possible The following data represent the number of people aged 25 to 64 years covered by health insurance (private or government) in 2018. Approximate the mean and standard deviation for age. Age 25-34 35-44 45-54 55-64 Number (millions) 21.6 30.1 32.7 25.8 (Type an integer or decimal rounded to two decimal places as

The display provided from technology available below results from using data for a smartphone carrier's data speeds at airports to test the claim that they are from a population having a mean less than 5.00 Mops. Conduct the hypothesis test using these results. Use a 0.05 significance level. Identify the null and alternative hypotheses, test

: Depreciation of a Car This data represents the age (in years) of a car vs. the value of that car (in dollars). Age (yrs) Value ($) 6300 4 0 10000 1 9100 2 7000 4 5800 5 5700 5 4500 7 4500 7 4200 8 4100 9 3100 6 5000 7 4700 10 2100 11 2500 12 2200 10 3400 1 8700 2 7800 6 6800 What is the value of the correlation coefficient? Does the correlation

What is the volume of the soid generated when the region bounded by the graphs of y _ J; and y = ix is revolved about the yaxis? O \"92:: 15 Let f be a function with the derivative given by f'(x) = vx

a = (-3, -2) andb = (2, 4). Represent a - b using the head-to-tail method . Use the Vector tool to draw the vectors, complete the subtraction by the head-to-tail method, and draw a - b. To use the Vector tool, select the initial point and then the terminal point. + Move Vector Undo Redo x Reset Ty 9 -10 -9 -8 -7 -6 -5 -4 -3 -2 -19 1 2 3 4 5 6. 7 8

A function f(a) is said to have a removable discontinuity at a = a if: 1. f is either not defined or not continuous at r = a. 2. f(a) could either be defined or redefined so that the new function IS continuous at a = a. 8x + 18 + Let f(x) = if x * 0, 2 x(x - 2) if x = 0 Show that f(a) has a removable discontinuity at a = 0 and determine what value

oster I. I!\" I 0 Question 12 540/2 pts '0 100 :3 99 G) The mass of a whiffle ball varies, usually between 40 and 50 grams. You decide to gather a random 53 of whiffle balls and record the mass of each. Your data is displayed in the table below. {Units are gran 45-9 42-5 ---- 45.2 Checksum: 791 You would like to describe a "typical" whiffle ball

(a) [worth 1 point] Prove that -k = (-1)"( (k+n-1) k-1 for all k 2 1 and n 2 0. (b) [worth 1 point] What is the generating function of the sequence ao, a1, a2, ... where an = (-1)" (k+n-1) k-1 for all n 2 0

Find the critical points and inflection points. Determine the local extrema and the intervals where the function is concave upward and concave downward. (a) f(x) = 4xe^(3x) (b) f(x)=xsin(x),x[/2, 3/2]

There are 450 players in the National Basketball Association? Of those players, 107 were born outside of the United States. You randomly select 15 players without replacement. Explain whether your 15 selections are independent from each other. Are your 15 selections Bernoulli trials? What is the probability that 5 of the players selected were born

Refer to Figure 4. Which of the following analyses is reported in Figure 4? X Singers* + Descriptives T-Tests ANOVA Mixed Models Regression Frequencies Factor Distributions JAGS Learn Bayes Machine Learning Meta-Ana Dependent Variable V1 12 Model Comparison Voice.part Height Models P(M) P(M data) BFM BF 10 error % Part Fixed Factors Null model

Pre-Calculus G11 TRUE or FALSE. Determine whether the statement is true or false. 1. The smallest number in Pascal's triangle is 2. 2. Blaise Pascal was a French mathematician who created a triangular array of numbers. 3. Mathematical Induction cannot be used to prove properties in the domain of the real numbers. 4. In using PMI, if a statement is

Evaluate the definite integral 8 (15x2 - 4x + 8)dx\fEvaluate the integral dac Integral =Evaluate the definite integrals a ) (23 cos 0 - 23 sin 0) de = 0 37/2 b) (23 cos 0 - 23 sin 0) de = TT / 2

Hi, The task is to "Identify one error in each section (there can be more than one) and comment on what should have been written instead (you will have to run an analysis on the data yourself to check)". I cannot for the life of me, identify the error in this statement. I would love some fresh eyes on this, to be able to determine the correct

Evaluate the definite integral 8 (15x2 - 4x + 8)dx\fEvaluate the integral dac Integral =Evaluate the definite integrals a ) (23 cos 0 - 23 sin 0) de = 0 37/2 b) (23 cos 0 - 23 sin 0) de = TT / 2

4. Given f(x) =-Vx-2+1. a) State the toolkit function y = g(x) related to y = f(x). b) Describe the sequence of transformations leading from y = g(x) to y = f(x). c) Sketch toolkit function and all transformations on the same set of coordinate axis. 5. a) Find the inverse function for f(x) = 1 - 3x. b) Check that fof = f of = x. C) Sketch both

I would like some assistance with the following Quantitative Methods probability distribution questions Use this information to answer the following questions. Consider the following Activity-On-Node (AON) PERT project. The three values that represent each activity's completion time (in days) correspond to an optimistic time, most likely time, and

1. (out of 10) scores are as follows: 9, 10, 7, 2, 4, 5, 8, 9, 10. Find the following ?? ?? ?? ?? ?? 2. Construct a frequency table from the following data set: { 78, 81, 78, 82, 80, 85, 85, 80, 78, 83, 79, 79, 80, 79, 79, 79, 80, 85, 85, 84, 86, 84, 84, 81, 85, 80, 85, 85, 79 } Q#2: Find the Proportion and Percentage from this Frequency

I would like some detailed step by step assistance with the following Inference for Proportions exercise Answer only parts F and G A 2021 global study conducted by Gallup noted that on average more than 8 of 10 persons interviewed enjoy the work they do daily. Additionally, in 34 of the near 140 countries in which the survey was conducted, at

A stock analyst wondered whether the mean rate of return of financial, energy and utility stocks differed over the past 5 years. He obtained a simple random sample of eight companies from each of the three sectors and obtained the 5-year rates of return shown in the following table (in percents): Financial Energy Utilities 10.76 12.72 11.88 15.05

que 1: You measure the heights of a random sample of 400 high school sophomore males in a midwestern state. The sample mean is 66.2 suppose that the heights of the population of al high school sophomore males follow a normal distribution with unknown mean and standard deviation of 4.1 inches. -Compute the 95% confidence interval for the mean.

"Hypothesis tests are inferential procedures. These tests determine whether your sample evidence is strong enough to suggest that an effect exists in an entire population. Suppose you're comparing the means of two groups. Your sample data show that there is a difference between those means." (Frost, J.) A sample size is the sample taken from a