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QUESTION 28 In which of the following situations we can not construct a confidence interval for the population proportion? n=130, x=60 On=280, x=120 Ⓒn=75, x=71 On=520, x=85

QUESTION 28 In which of the following situations we can not construct a confidence interval for the population proportion? n=130, x=60 On=280, x=120 Ⓒn=75, x=71 On=520, x=85

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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QUESTION 28 In which of the following situations we can not construct a confidence interval for the population proportion? n=130, x=60 n=280, x=120 n=75, x=71 On=520, x=85 QUESTION 29 Ali is interested in estimating the mean amount spent per day in a shopping mall based on 16 customers. It is known that the amount spent per day in a shopping mall is normally distributed. Find the corresponding critical value for constructing a 93% confidence interval. Round your answer to three decimal places. QUESTION 30 Find the confidence level related to the critical value f/2= -1.81 where the sample size n =9. 91.2% 089.2% Ⓒ90.3% 89.8% QUESTION 31 The price of Apple iPad 2021 is recorded at a random sample of 64 electronics stores in UAE. The resulting 99% z- based confidence interval for the mean price of Apple iPad 2021 was (1579 Dhs, 1802 Dhs). Find the margin of error (E) of the 99% confidence interval. Round your answer to one decimal place.
Transcribed Image Text:QUESTION 28 In which of the following situations we can not construct a confidence interval for the population proportion? n=130, x=60 n=280, x=120 n=75, x=71 On=520, x=85 QUESTION 29 Ali is interested in estimating the mean amount spent per day in a shopping mall based on 16 customers. It is known that the amount spent per day in a shopping mall is normally distributed. Find the corresponding critical value for constructing a 93% confidence interval. Round your answer to three decimal places. QUESTION 30 Find the confidence level related to the critical value f/2= -1.81 where the sample size n =9. 91.2% 089.2% Ⓒ90.3% 89.8% QUESTION 31 The price of Apple iPad 2021 is recorded at a random sample of 64 electronics stores in UAE. The resulting 99% z- based confidence interval for the mean price of Apple iPad 2021 was (1579 Dhs, 1802 Dhs). Find the margin of error (E) of the 99% confidence interval. Round your answer to one decimal place.
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