Under which of the following circumstances is itimpossible to construct a confidence interval for thepopulation mean?A. A normal population with a small sample and anunknown population variance.B. A non-normal population with a small sample andan unknown population variance.C. A non-normal population with a large sample andan unknown population variance.D. A normal population with a large sample and aknown population variance.The use of the standard normal distribution forconstructing a confidence interval estimate for thepopulation proportion p requires:A. np and n(1 − p) are both greater than 5B. nô and n(1 − p) are both greater than 5, wherep denotes the sample proportionc. n(p + p) and n(p − p) are both greater than 5D. that the sample size is greater than 30

Given, the circumstances where impossible to construct confidence interval. Note- according to the…

Answered: Under which of the following…

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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The salaries of professional baseball players are heavily skewed right with a mean of $3.2 million and a standard deviation of $2 million. The salaries of professional football players are also heavily skewed right with a mean of $1.9 million and a standard deviation of $1.5 million. A random sample of 40 baseball players’ salaries and 35 football players’ salaries is selected. The mean salary is determined for both samples. Let represent the difference in the mean salaries for baseball and football players. Which of the following represents the shape of the sampling distribution for ? skewed right since the populations are both right skewed skewed right since the differences in salaries cannot be negative approximately Normal since both sample sizes are greater than 30 approximately Normal since the sum of the sample sizes is greater than 30

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