Mathematics Questions and Answers February 02, 2018

The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 32 for a sample of size 18 and standard deviation 4. Estimate how much the drug will lower a typical patient's systolic blood pressure (using a 80% confidence level). Give your answers to one decimal

Sex and Stance on Bill 2 a Sex Stance on Bill 2 Male Female Total Support 387 453 840 25 Oppose 132 109 241 Total 519 562 1081 Calculate the degrees of freedom for these data

Use the spinner below to find the probability of getting the following number after 1 spin. 12 11 2 10 4 8 5 7 6 P(odd) (Please enter a reduced fraction)

Restaurants Data extracted from Zagat Survey 2015, New York City) Zagat's publishes restaurant ratings for various locations in the United States. This data file contains the Zagat rating for food, dcor, service, and the cost per person for a sample of 100 restaurants located in the center of New York City and in an outlying area of New York City.

1. Sketch and shade the region of integration D 2. Convert to polar coordinates 3. Evaluate the integral

1 x2 110 x dydx

3. The formula for exponential decay is A = Apekt (a) fermium-253 has a half-life of 3 days. Find the value of k in a model of exponential decay for fermium-253. (b) A model for the amount of californiam-248 after t days is A = Age .00207t. How many days will it take for 90% of an initial sample to remain

Help please The cost (in dollars) of a taking a cab from the airport for a k mile trip is given by C = f(k). a) (4 pts.) What is the meaning of the derivative f '(20)? b) ( 1 pt.) What are its units

Question 7: Calculate the age-adjusted risk difference of hookworm re-infection associated with residing in the rural community, compared to the urban community. Formulate your answer as I100 and round to the nearest tenth (#.#!100)

For the smooth curve r (t),find the parametric equations for the line that is tangent to r at the given parameter value t=t0. r (t)=(6t^24t) i +(t+8) j + k ; t0=2 A projectile is fired at a speed of1,160m/sec at an angle of41. How long will it take to get 29km downrange at horizontal?

317. If (xi + yj) . ds, where S is surface * 2 + y 2 = 4 , 152 53 , oriented with unit normal vectors pointing outward 318. J (zk) . dS, where S is disc x ty-

L -O s(t) 3 -2 1: Estimate s'(1). Include units of measure

Estimate Include units of measure

Please help me do a scatter plot using the information in the table. Below is a sample of what I wanted on the graph. The graph name is provided. P20ul. Y axis with values and the x axis with the volume.

Answer the question in the screenshot and please explain the steps for solving the specific type of problem. Thank you.

QUESTION T POINT Write Newton's formula as En+1 = F (@n ) to approximate v 18. Provide your answer below: X n+ 1

Question 13 1 pts Sex and Stance on Bill 2 Sex Stance on Bill 2 Male Female Total Support 387 453 840 Oppose 132 109 241 Total 519 562 1081 What is the x critical if you we use an alpha of .05

Mason plays a game where he throws 3 differentcolored dice each turn. The dice are all fair. The green die has 30 equal faces, the blue die has 6 equal faces, and the red die has 100 equal faces. How many possible outcomes are in the sample space for one roll of all three dice

Graph the following function. y = - 4 cos 8x - Use the graphing tool to graph the function. Click to enlarge graph (For any answer boxes shown with the grapher, type an exact answer. Type the word pi to insert the symbol x as needed.)

Question 6 5 pts For the function f(x) = x2, compute the average rate of change: (a) From 1 to 2 (b) From 1 to 1.5 (c) From 1 to 1.1 (d) From 1 to 1.01 (e) From 1 to 1.001 Edit View Insert Format Tools Table 12pt v Paragraph BIUA BV TV

Please select all true statements. There may be more than one answer. Mutually exclusive events are always independent mutually exclusive events are always dependent if A and B are independent events, then the P(A/B)=0 If A and B are independent events, then the P(A/B)=A If A and B are mutually exclusive events, then the P(A/B)=0

I need help with questions and b if possible please! a. Use implicit differentiation to find the derivative dy dx b. Find the slope of the curve at the given point. 3x Vy + 4y = 13: (3,1) dy a. dx b. The slope at (3,1) is (Type an integer or a simplified fraction.)

Question 9 Compute the derivative of the function O f' (x) = 21 + 4e f (x) = 213 + 2ex. O f (x) = 21 +2e Of'(x) = 41 + 40 Of' (x) = 41 +2e

Consider the following ordered data. 2 5 5 6 7 7 8 9 10 (a) Find the low, Q1, median, Q3, and high. low high (b) Find the interquartile range. [:J (c) Make a box-and-whisker plot. 023456T391i} O

As a marketing manager in the Arc'teryx company, you are asked to ready a presentation about the success rate of a recently released product in different branches. How would you approach this task? What are the statistics you would be interested to collect and present? And how would you choose tables/graphs you want to include in your

Prove the following equation using the mathematical induction method: 1 + 2 + 22 + . . . + 2 n = 2 n +1 - 1

As a marketing manager in the Arc'teryx company, you are asked to prepare a presentation about the success rate of a recently released product in different branches. How would you approach this task? What are the statistics you would be interested to collect and present? And how would you choose tables/graphs you want to include in your

2. A sample from an assumed normal distribution produced the values 9, 14, 10, 12, 7, 13, 12. a) What is the single best estimate of ? b) Find an 80% C.I. for *

Find the absolute maximum and minimum values off(x,y)=xy2x1f(x,y)=xy2x1on the circular regionD={(x,y)|x2+y24}.

A pediatric patient weighs 3.5 kg and has a length of 52 cm. The manufacturer of the prescribed medication recommends 0.8-1.2 mg/kg per day. What is the minimum daily dose for this pediatric patient

mm. 1. An ice cream company1 wants to make an ice cream cone that contains a volume of ISOmL but a minimum surface area. Find the dimensions of this cone. Hint: A cone's volume is V = m"2"1/3 and its surface area is A = arm/r2 + 112

For the functions f(x) = e2x and g(x) = x2, find the following. NOTE: Enter the exact answers (a) f(g(1)) (b) g(f ( 1) ) = (c) f(g (20 ) ) = (d) g( f (2) ) = ( e) f (t) g (t ) =

Please help solve this Consider the following position function r(t)= fort>0. (a) Find lim r(t). 2 (b) Find the velocity of the object. (c) Find the vector equation of the line tangent to the curve r(t) at t=

(1 point) Which of the following sets of vectors are linearly independent? (Check the boxes for linearly independent sets.) n 4 9 2 A _5 a 8 y 7 7 o o 0 B \"1\"] 7' 0 5 C. 8 7 2 1 l4} _ 9 1 E. 9 , 3 , 6] 4 5 7 7 3 4 1 F 6 a 3 a 3 9 5 14

Find y' and the slope of the tangent line to the graph of the equation below at the indicated point. 140 + y2 -x3 + 20= 0; (3,3) . . . . . y'/ (3,3) = (Simplify your answer.)

For my last histogram it shows the amount of time Texas Teens spend outdoors. The mean hours outside was 8.6 hours with a range of 25. This is way lower than Pennsylvania Teenagers and it may have to do with how hot it is in Texas making people stay inside. Looking at the graphs they look very similiar with the same data but Pennsylvania is

Evaluate 290 2" + (-i )91 4 -2+ V3i where z = -V3 + i. Simplify as much as possible

Find the bounded area enclosed by the graphs of f and g when 7 f(x) 16 - 72 9(2) = 1. Enter your answer as a decimal with four significant digits

Question

Assuming a normal distribution to get the critical value. If given a measurement of 12 and were told that the SEE (Standard Error Estimate) is 42%, can you find the maximum and minimum possible values for the measurement?

The test scores of five students in both Math and Geography are presented in the table. Math Geography Student 1 T" 6 Student 2 9 5 Student 3 6 5 Student 4 8 8 Student 5 9 7 The calculation for the correlation, r, for this set of five students is . Answer choices are rounded to the hundredths place

P Do Homework - HW 5.1 - WaveBrowser www.mathxl.com/Student/PlayerHomework.aspx Math 126 Fall 2021 = Homework: HW... Question 10, 5.1.53 Part 1 of 2 If f(x) = 8x3 - 5x2+ x -5 and g(x) = 1, find (f o g)(x) and (g of)(x)

Sketch the level surface for the function w=F(x,y,z)=x^2+y^2

Analyze: Gladwell examines the history of the US public school system in section2 (lines 53-115) before he discusses summer vacation in section 3 (lines 116-221). How do the ideas and information in section 2 support his discussion in section 3

Chambers et al. (2008) reported that "twenty participants were recruited voluntarily as they applied for a place on their first 10-day meditation course at Dhamma Aloka Vipassana Meditation Centre in WooriYallock, Victoria, Australia. They consisted of 11 men and 9 women, aged 21-57 years (M= 33.70,SD= 12.34)." 1. What does it mean that the SD =

4. When the following hypotheses are being tested at a level of signicance of a H0: , 2 500 Ha: p,

#6 What is the EVUPI? Success Moderate Success Failure Probability 0.3 0.3 0.4 Sell Company 85 85 85 Form Joint Venture 210 120 110 Sell Software on own 420 191 -100 Submit Answer format: Number: Round to: 1 decimal places

ookmarks Profiles Tab Window Help ASU Pearson Acc x Assignment. x Do Homewo X Course Hero X + mylab.pearson.com/Student/PlayerHomework.as.. Update : STP 231 2022 Spring B 20713 Tran (1) Homework: HW 13: Ch HW Score: Question 1, 8.1.7 50.93%, 9.17 of 8 - Hypotheses Tests Part 1 of 2 18 points for One Population O Points: 0 of 1 Save Claim: The mean

I don't understand this exercise A community college is planning to expand its library. Forty students were asked how many times they visited the library during the previous semester. Their responses are given below. Construct a frequency distribution, letting each class have a width of 1. WOWNNN UIBAAD NNNNN

After reading Chapter 1 (organizational effectiveness versus efficiency ), think about Toyota's highly publicized safety problems by reading on line articles about Toyota. One observer said that a goal of efficiency had taken precedent over a goal of quality within Toyota. Do you think managers can improve both efficiency and effectiveness

Based on the results, would you recommend using a sound-emitting device to keep deer from running across highways? Explain your answer. Negative Neutral Positive

Topic : Establishing Causal Interference Question: 2. Suppose you assumed the following data-generating process for Y: Yi = + 1 Ti + 2 X1i + 3 X2i + 4 X 3i + Ui. Suppose further that the population regression equation for T is: Ti = A + B1 X1i + B2 X2i + B3 Zi + Vi where A, B1 , B2 , B3 are all > 0. If you regressed Y on T only, which of the

Consider the following functions. f(x)=x2+3 and g(x)=x+4 Find the formula for (fg)(x) and simplify your answer. Then find the domain for (fg)(x). Round your answer to two decimal places, if necessary.

1. You are fencing in 8 plots at the community garden in a 4 x 2 grid. You have 1200 feet of fencing and wish to maximize the total area of the plots. What dimensions will maximize the total area

Consider the following functions. f(x)=1/x and g(x)=x^3 Find the formula for (fg)(x) and simplify your answer.

Maria is the director of a summer soccer camp including 45 players. From these 45 players, Maria selects 3 players as section leaders. (Each section leader has a specic set of duties, they are NOT interchangeable.) How many possible outcomes are in this sample space

Solve it Quick Please. Consider an experiment with rolling a die. Define two eventsA = {2, 5,6} and B = {6}. Calculate P(A U B). Express the probability with three digits after the decimal point

Need help with Excel (share the excel documents) 1. Two-Sample t-Test Question 1 You are the regional director in the store management department of a retail chain store. You are interested in investigating if the average daily sales of two of your stores are different from one another. The test is done at 5% significance level. The test is

What do i need to study in order for me to master statistics and probability? and maybe also provide some examples? that would be very helpful to me this semester. Thank you.

In a process control problem, it is determined that A2 = 0.285 and Sbar=5.683. The estimation of population variance is ...........a) 4.826, b) 5.826, c) 28.45, d) 33.95

Tom wanted to quantify the heights of all of the basketball players on his favorite teams. According to this histogram, what is the height range that is least Frequency of He common within his favorite teams? 5. 5 4 W Frequency of Height 2 5 74 76 78 80 82 84 86 Height

Un libro se ofrece en venta recargndose el rpor ciento del precio del costo, pero a un estudiante al comprarlo le rebajaron el pagpor ciento. Si el vendedor no gan ni perdi, cunto le rebajaron al estudiante?

Use the function, f(x)=|x|. Reflect the function over the x-axis and move the function down by 5 units.

A recent survey of 1090 U.S. adults selected at random showed that 645 consider the occupation of firefighter to have very gre prestige. Estimate the probability (to the nearest hundredth) that a U.S. adult selected at random thinks the occupation of firefighter has very great prestige

Hero or ct To O For what value of x is h'(x) not defined? Find also the derivative of f (x) = O 8. Find the derivative of the function h(x) (8x3 + 27) 1/5 . Q s/I (LZ + EX8) + xA Her o O

Determine whether the integral is convergent or divergent. If it is convergent, evaluate it. (If the quantity diverges, ente 31e-v/2dy O convergent O divergent Need Help? Master It

For the data set, calculate Ex, Ex-, and (Ex) 2 7. -1, 3, 7, 1, 6, -6, 9 5 Ex - Ex2

Assume that 6% of Canadians are afraid of being alone in a house at night. If a random sample of 20 Canadians is selected, find these probabilities. (a) (2.5 pts) There are exactly 5 people in the sample who are afraid of being alone at night. (b) (2.5 pts) There are at least 3 people in the sample who are afraid of being alone at night.

Please help with these two math questions 6. A box with a square base and an open top must have a volume of 32 1113. Find the dimensions of the box that minimize the amount of material used. points ex+h_ex 7. Evaluate lim h>0 '1

Use the one-to-one property of logarithms to find an exact solution for ln(4)+ln(4x28)=ln(49).

Use the integral test to determine whether the series converges. 8 5 sin (x) 2xa 5 cos(x)

How are Confidence Intervals and Hypothesis Tests related?

Please help me, Thankyou! Direction. Find the tangent and normal line to the given curve. check by plotting the line and the curve. 1. The tangent and normal line to y= fxity at (9, 5 ). 2. The tangent and normal line to y =! litxa at the origin . 3. The tangent and normal line to axe-y? =1 at (1,2)

Q #1 - V 5.3 HmwkeADDTLPropertiesof x i 6 9 O Q Q https://www.webassign.net/web/Student/AssignmentResp... A\" {3 e. 6'\" ;: {31:12. for whom you have no addresses and decide to use the company to track them. Q USE SALT (a) Make a histogram showing the probability of r = 0 to 7 friends for whom an address will be found. as 0.4 025 \"3 0.2 Mr) 2 0.1

Next question Get a similar question TOU Can relly A bag contains 2 gold marbles, 9 silver marbles, and 28 black marbles. You randomly select one marble from the bag. What is the probability that you select a gold marble? Write your answer as a reduced fraction. P(gold marble)

[use SPSS] You are given the following pairs of scores on X (height in inches) and Y (weight in lbs).

Which is the correct expression for a In AABC, mZA = 40, m/C= 65, and c = 12. Which is the correct expression for a ? 12 sin 40 sin 750 12 sin 650 sin 400 12 sin 650 sin 750 12 sin 40 sin 650

You are an intern with Washington state's Office of Financial Management. One of their current projects is how food stamp program participation affects the state budget. Food stamps, now officially called Supplemental Nutrition Assistance Program (SNAP), are 100% funded by the federal government, but the state has to pay 50% of the administrative

b) use density and smsa variables to build a linear regression model to predict tax per capita (taxpc) . Display a summary of your model indicating Residuals, Coefficients, my etc. What conclusion can you draw from this summary? {r} model

Pizza Sales A pizza restaurant sold 24 cheese pizzas and 16 pizzas with one or more toppings. Twelve of the cheese pizzas were eaten at work, and 10 of the pizzas with one or more toppings were eaten at work. If a pizza was selected at random, find the probability of each: a. It was a cheese pizza eaten at work. b. It was a pizza with either one

12. [1/1 Points] DETAILS PREVIOUS ANSWERS LARCAL Use the rules of differentiation to find the derivative of the function. h ( x ) = = 14 sec x X

Question 7: Calculate the age-adjusted risk difference of hookworm re-infection associated with residing in the rural community, compared to the urban community. Formulate your answer as I100 and round to the nearest tenth (#.#!100)

es/ 1/5/61/quizzes/1214197/take Use the graph to answer the question. 10 (2, 10) (-2, 6) (-10, 0) (-5, 0) (5, 0) (7 . 3 ) -10 -5 (0, 0) 5 10 X (-8, -4) -6 Is f decreasing on the interval [2, 5]

Find the indicated z-scores shown in the graph. Click to view page 1 of the Standard Normal Table Click to view page 2 of the Standard Normal Table 2-7 0 27 The z-scores are (Use a comma to separate answers as needed. Round to two decimal places as needed.)

Hi I already submitted this question but the answer did not stimulate in R which is what my question is. The answer may have been correct but it did not answer my question as asked What is the probablity of getting a sum of greater than 20 when 2 fair 12-sided dice are rolled. (Simulate this in R, by generating sample space)

The weights of the fish in a certain lake are normally distributed with a mean of 8 lb and a standard deviation of 2 lb. If 15 fish are randomly selected, what is the probability that the mean weight will be less than 8.2 lb? Express the answer as a percentage rounded to the nearest hundredth without the % sign.

help me in this question in computerized form I. In each of Problems 23 through 30, use the method of reduction of order to find a second solution of the given differential equation. 2 1. ty" - 4ty' + 6y = 0,y (() =t 2 2. xy" -y' + 4x y= 0. x > 0; y(x) = sin x

Explain

Giventhe tollwingunctions, f (u) (u) and Find 52.7 f(q)) fl(uj

Why might one prefer to use the logarithmic differentiation for finding derivatives of functions that have another function as an exponent? please provide an example which is not already published.

use triple integral to find the volume of the solid above

A sample of 17 production numbers in a small company earned the following wages for a given week arranged in ascending order: 140, 140, 140, 140, 140, 140, 140, 155, 155, 165, 180, 190, 200, 205, 225, 230, 240. Calculate the following: 1. Mean 2. Median 3. Mode 4. Variance 5. Standard Deviation 6. Coefficient of Variance 7. Range 8. P74 9. D6 10.

LESSON: TRIGONOMETRIC IDENTITIES CIRCULAR FUNCTIONS HAVE MANY PRACTICAL APPLICATIONS IN REAL LIFE. GIVE 2 EXAMPLE OF REAL LIFE PROBLEM IN EACH FIELD AND SOLVE THE PROBLEM WITH COMPLETE SOLUTION AND APPROPRIATE GRAPHS/ILLUSTRATIONS THAT WHERE CIRCULAR FUNCTIONS ARE APPLIED AND THE FIELD ARE...... JUST CHOOSE 2 FIELDS 1.) health 2.) meteorology 3.)

before a new drug is released to the market, its safety must be ensured. Scientists testing the safety of the new drug use the following hypotheses for the hypothesis testing: H0: drug is not safe Ha: drug is safe Which of the following best describes Type 2 error? a. when in fact the drug is not safe, we conclude that the drug is not safe b. when

Statistics and Probability When looking at survey design, the module learning materials covered some specific recommendations regarding the content at the beginning and end of a survey. Please explain what these recommendations are and why each one is important.

A weather forecast predicts a 33 % chance of rain tomorrow. What are the odds in favour of it raining tomorrow?

Evaluate the following INTEGRATION OF EXPONENTIAL function (e 3x +1) 2 dx e sin4x cos4x dx e x -4e -x /e x dx e 3x dx

Scientists enlist 40 participants, 20 of which ate only organic vegetables for two weeks, and 20 of which ate conventional vegetables. Over the two weeks, they counted the number of times they burped. a) Define and justify an appropriate metric (i.e., test statistic) to compare the centers of the two groups b) What is the observed test statistic?

Refer to the accompanying data display that results from a simple TInterval random sample of times (minutes) between eruptions of the Old (85.74,91.76) Faithful geyser. The confidence level of 95% was used. Complete * = 88.75 parts (a) and (b) below. Sx = 8.897431411 n =36

What would be a real life example that uses exponential or logarithmic functions? I do not understand what this would be.

Problem 1 (10 points) Consider the following confusion matrix. predicted class CI C2 actual class 427 42 C2 1630 829 Note: Cl is positive and C2 is negative. Compute sensitivity, specificity, precision, accuracy, F-meassure, F2, and MCC measures

Find the value of the six trignometric functions of with the given constraints. tan = -15/8 ; sin < 0 csc = 4 ; cot <0 cot is undefined; /2 is less than or equal to is less than or equal to 3/2 sec 3/2 sin /2

Hello, I am stuck on all three parts of this question (as shown in the attached picture). Please help explain, thank you! 1. Let X = (X1, X 2, , X\") be a random sample, where X 1- is a Poisson random variable with mean A > 0. (a) (2 Points) Show the distribution of T = X1 + + Xn is also a Poisson distribution (Hint: please use the MGF method).