Professor Jones took a random sample of 8 students and asked them how many times per week they dine out. The responses were:2234 556 7Find the 95% confidence interval for the population mean.Hint: You must first find the sample mean and standard deviation.OA. 3.0< u <5.5OB. 3.5< <4.7OC. 2.7< <5.8O.D. 3.2<<6.0

Number of students n=8 x: 2 , 2 ,3 ,4 , 5 , 5 , 6 ,7

Answered: Professor Jones took a random sample of…

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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Q.4.1 A recent survey found that 35 people out of a sample of 410 South Africans sufferfrom diabetes. Construct a 95% confidence interval for the true proportion of allSouth Africans who suffer from diabetes. Interpret your answer.Q.4.2 The average age of a sample of 17 South African women who attend yoga classeswas found to be 31 years, with a standard deviation of 3.5 years. Construct a 90%confidence interval for the true average age of all South African women who attendyoga classes. Interpret your answer.Q.4.3 The average time taken by a sample of 68 runners to complete a 10km race was 42minutes. Assuming a population standard deviation of 8.65 minutes, construct a99% confidence interval for the true average time taken by all runners to completethe race. Interpret your answer.Q.4.4 What two conditions will result in the use of the student-t distribution whenconstructing a confidence interval for a population mean?Q.4.5Q.4.5.1 Explain briefly what is meant by the terms; ‘point…

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