According to a recent survey of 1500 people, 64% feel that the president is doing an acceptable job. We are interested in the population proportion of people who feel the president is doing an acceptablejob.NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.)O Part (a)In words, define the random variables X and P'.O Xis the number of people who feel the president is not doing an acceptable job, and P'is the proportion of people in the sample who feel the president is not doing an acceptable job.O Xis the proportion of people in the sample who feel the presidentsdoing an acceptable job, and P' is the number of people who feel the president is doing an acceptable job.O Xis the proportion of people in the sample who feel the president is not doing an acceptable job, and P'is the number of people who feel the president is not doing an acceptable job.O Xis the number of people who feel the presidentdoing an acceptable job, and P' is the proportionpeople in the sample who feel the president is doing an acceptable job.O Part (b)Which distribution should you use for this problem? (Round your answers to four decimal places.)P'-Explain your choice.O The standard normal distribution should be used because V npg z 10, which implies a large sample.O The standard normal distribution should be used because we are interested in proportions and the sample size is large.O The binomial distribution should be used because the two outcomes are "the president is doing a good job" and "the president is not doing a good job."O The Student's t-distribution should be used because we do not know the standard deviation. OPart (c)Constrlict a 90% confidence interval for the population proportion of people who feel the president is doing an acceptable job.(i) State the confidence interval. (Round your answers to four decimal places.)(ii) Sketch the graph.C.L. =%3DP'(iii) Calculate the error bound. (Round your answer to four decimal places.)8|N

According to a recent survey of 1500 people, 64% feel that the president is doing an acceptable job. We are interested in the population proportion of people who feel the president is doing an acceptab job. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) O Part (a) In words, define the random variables X and P. O Xis the number of people who feel the president is not doing an acceptable job, and P'is the proportion of people in the sample who feel the president is not doing an acceptable job. O Xis the proportion of people in the sample who feel the president is doing an acceptable job, and Pis the number of people who feel the president is doing an acceptable job. O X is the proportion of people in the sample who feel the president is not doing an acceptable job, and P'is the number of people who feel the president is not doing an acceptable job. O Yis the pumber of people u

According to a recent survey of 1500 people, 64% feel that the president is doing an acceptable job. We are interested in the population proportion of people who feel the president is doing an acceptab job. NOTE: If you are using a Student's t-distribution, you may assume that the underlying population is normally distributed. (In general, you must first prove that assumption, though.) O Part (a) In words, define the random variables X and P. O Xis the number of people who feel the president is not doing an acceptable job, and P'is the proportion of people in the sample who feel the president is not doing an acceptable job. O Xis the proportion of people in the sample who feel the president is doing an acceptable job, and Pis the number of people who feel the president is doing an acceptable job. O X is the proportion of people in the sample who feel the president is not doing an acceptable job, and P'is the number of people who feel the president is not doing an acceptable job. O Yis the pumber of people u

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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1llustration 19.20. While throwing 5 dice 30 times, a person obtained 6 a total of 23 times. Can we consider the difference bet- ween observed and expected results as being significantly different?
Students investigating the packaging of tortilla chips purchased 6 bags of chips marked with a net weight of 29.4 grams. They carefully weighed the contents of each bag, recording the following weights (in grams): 29.1, 28.1, 29.4, 28.6, 28.7, 28.8. Complete parts a through f below. a) Do these data satisfy the assumptions for inference? Explain. O A. The Randomization Condition is not met and cannot be assumed to be true. The histogram is unimodal and roughly symmetric, so the Nearly Normal Condition is met. O B. The Randomization Condition is met. The histogram is bimodal and not symmetric, so the Nearly Normal Condition is not met. O.C. The Randomization Condition is met. The histogram is extremely skewed right, so the Nearly Normal Condition is not met. D. The Randomization Condition may not be satisfied. However, it is reasonable to think that these bags are representative of all bags of chips. The histogram is unimodal and roughly symmetric, so the Nearly Normal Condition is met.…
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1. Identify if the following scenarios describe a discrete or continuous random variable. Explain your choice. (a) X = The number of persons in an emergency room 181screte (b) W = The weights of delivery trucks at a supermarket. Lconinaas (c) H= The areas of houses being built in a new subdivision. 2. Faith is a 95% free throw shooter. At practice, each player shoots 20 free throws. L X the number of free throws Faith makes out of 20 shots. (a) Explain why X is a binomial random variable. (b) Calculate the mean of X. (c) Calculate the standard deviation of X. (d) Use the binomial probability formula to find P(X = 19). Interpret this value in context. (e) Her coach says that he will let the team out of practice early if Faith makes 18 or me free throws. What is the probability that practice ends early? Show your work. 2017 BFW Publishers Starnes/Tabor Statistics and Probability with Applications 3/e
An insurance company covers 100$ per day for up to three days staying in a hospital, and 50$ per day for any day after the first three days if any. The number of days the patients used to stay in the hospital is a random variable with PMF: 6-k k = 1, 2, 3, 4, 5 Px(k) =. 15 else the expected amount the company will pay is: Select one: а. 220 b. 230 c. 166.67 d. 233.33 е. 200
The accompanying data are from an article. Each of 309 people who purchased a Honda Civic was classified according to gender and whether the car purchased had a hybrid engine or not. Male Female Hybrid 76 33 Not Hybrid 116 84 Suppose one of these 309 individuals is to be selected at random. Determine if the probabilities P(hybrid male) and P(male hybrid) are equal. If not, explain the difference between these two probabilities. O Yes, the probabilities are equal. No, the probabilities are not equal. The first is the probability that a hybrid Honda Civic owner is male, and the second is the probability that a male Honda Civic owner purchased a hybrid. O No, the probabilities are not equal. The first is the probability that a male Honda Civic owner purchased a hybrid, and the second is the probability that a hybrid Honda Civic owner is male.
Part 1 of 6 Determine whether the following value is a continuous random variable, discrete random variable, or not a random variable. a. The number of light bulbs that burn out in the next year in a room with 13 bulbs b. The hair color of adults in the United States c. The number of pigeons in a country d. The time it takes for a light bulb to burn out e. The number of free-throw attempts before the first shot is missed f. The number of people in a restaurant that has a capacity of 150 ..... a. Is the number of light bulbs that burn out in the next year in a room with 13 bulbs a discrete random variable, continuous random variable, or not a O A. It is a discrete random variable. O B. It is a continuous random variable. O C. It is not a random variable.
plz provide handwritten answer for part b
A production engineer wants to test the effect of four machines on the strength of the parts produced. Because there might be variability from one worker to another, the engineer decides to use a randomized block design, with the workers considered as blocks. Which of the following statements is true? Worker Machine 1 2 5 73 68 3 74 75 67 73 67 75 68 78 68 73 71 75 75 69 O a. There is a difference among the machine types at a = 0.05 level. b. The "Model F-value" of 7.38 implies the model is not significant c. The "Model F-value" of 5.38 implies the model is not significant d. There is no difference among the machine types at a = 0.05 level 23 3 47235 71