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(d) In the sample obtained in part (a), what is the probability that the proportion who are satisfied with the way things are going in their life exceeds 0.81? The probability that proportion who are satisfied with the way things are going in their life exceeds 0.81 is 0.2345. (Round to four decimal places as needed) (e) Using the distribution from part (c), would it be unusual for a survey of 100 people to reveal that 72 or fowor poople in the sample are satisfied with their lives? less than * ▼ unusual because this probability The probability that 72 or fewer people in the sample are satisfied is, which (Round to four decimal places as needed) 200 ↳

(d) In the sample obtained in part (a), what is the probability that the proportion who are satisfied with the way things are going in their life exceeds 0.81? The probability that proportion who are satisfied with the way things are going in their life exceeds 0.81 is 0.2345. (Round to four decimal places as needed) (e) Using the distribution from part (c), would it be unusual for a survey of 100 people to reveal that 72 or fowor poople in the sample are satisfied with their lives? less than * ▼ unusual because this probability The probability that 72 or fewer people in the sample are satisfied is, which (Round to four decimal places as needed) 200 ↳

MATLAB: An Introduction with Applications
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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According to a study, the proportion of people who are satisfied with the way things are going in their lives is 0.78 Suppose that a random sample of 100 people is obtained. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (b) Explain why the sample proportion, p, is a random variable. What is the source of the variability? OA. The sample proportion p is a random variable because the value of p represents a random person included in the sample. The variability is due to the fact that people may not be responding to the question truthfully. OB. The sample proportion p is a random variable because the value of p represents a random person included in the sample. The variability is due to the fact that different people feel differently regarding their satisfaction. ✔c. The sample proportion p is a randem variable because the value of varies from sample to sample. The variability is due to the fact that different people feel differently regarding their satisfaction. OD. The sample proportion p is a random variable because the value of p varies from sample to sample. The variability is due to the fact that people may not be responding to the question truthfully. (c) Describe the sampling distribution of p, the proportion of people who are satisfied with the way things are going in their life. Be sure to verify the model requirements. -0,780 and HA D 0.041 Since the sample size is no more than 5% of the population size and np(1-p) = 17 160 2 10, the distribution of p is approximately normal with. (Round to three decimal places as needed.) (d) In the sample obtained in part (a), what is the probability that the proportion who are satisfied with the way things are going in their life exceeds 0.81? The probability that proportion who are satisfied with the way things are going in their life exceeds 0.81 is 0.2345 (Round to four decimal places as needed.) 4 (e) Using the distribution from part (c), would it be unusual for a survey of 100 people to reveal that 72 or fewer people in the sample are satisfied with their lives? The probability that 72 or fewer people in the sample are satisfied is, which less than (Round to four decimal places as needed) unusual because this probability
Transcribed Image Text:According to a study, the proportion of people who are satisfied with the way things are going in their lives is 0.78 Suppose that a random sample of 100 people is obtained. Complete parts (a) through (e) below. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (b) Explain why the sample proportion, p, is a random variable. What is the source of the variability? OA. The sample proportion p is a random variable because the value of p represents a random person included in the sample. The variability is due to the fact that people may not be responding to the question truthfully. OB. The sample proportion p is a random variable because the value of p represents a random person included in the sample. The variability is due to the fact that different people feel differently regarding their satisfaction. ✔c. The sample proportion p is a randem variable because the value of varies from sample to sample. The variability is due to the fact that different people feel differently regarding their satisfaction. OD. The sample proportion p is a random variable because the value of p varies from sample to sample. The variability is due to the fact that people may not be responding to the question truthfully. (c) Describe the sampling distribution of p, the proportion of people who are satisfied with the way things are going in their life. Be sure to verify the model requirements. -0,780 and HA D 0.041 Since the sample size is no more than 5% of the population size and np(1-p) = 17 160 2 10, the distribution of p is approximately normal with. (Round to three decimal places as needed.) (d) In the sample obtained in part (a), what is the probability that the proportion who are satisfied with the way things are going in their life exceeds 0.81? The probability that proportion who are satisfied with the way things are going in their life exceeds 0.81 is 0.2345 (Round to four decimal places as needed.) 4 (e) Using the distribution from part (c), would it be unusual for a survey of 100 people to reveal that 72 or fewer people in the sample are satisfied with their lives? The probability that 72 or fewer people in the sample are satisfied is, which less than (Round to four decimal places as needed) unusual because this probability
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