**Question:**Use the standard normal distribution or the t-distribution to construct a 95% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results.In a random sample of 50 people, the mean body mass index (BMI) was 26.7 and the standard deviation was 6.06.---**Question:**Which distribution should be used to construct the confidence interval? Choose the correct answer below.- **A.** Use a normal distribution because the sample is random, the population is normal, and σ is known. - **B.** Use a t-distribution because the sample is random, n ≥ 30, and σ is unknown. - **C.** Use a normal distribution because the sample is random, n ≥ 30, and σ is known. - **D.** Use a t-distribution because the sample is random, the population is normal, and σ is unknown. - **E.** Neither a normal distribution nor a t-distribution can be used because either the sample is not random, or n < 30, and the population is not known to be normal.

Given,Sample mean(x̅) = 26.7Standard deviation(s) = 6.06Sample size (n) = 50α = 1- 0.95 = 0.05

Answered: Use the standard normal distribution or…

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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Use the range rule of thumb to identify the values that are significantly low, the values that are signficantly high, and the values that are neither significantly low nor significantly high. A test is used to assess readiness for college. In a recent year, the mean test score was 19.8 and the standard deviation was 5.4, Identify the test scores that are significantly low or significantly high. What test scores are significantly low? Select the correct answer below and fill in the answer box(es) to complete your choice. O A. Test scores that are between (Round to one decimal place as needed. Use ascending order.) and Get more help - Next all 9:26 PM 47°F Clear 3/27/2022 近

It is given that the standard score is 2.8 and it is known that for the normal distributed data 52, the standard deviation is 10. What is the value of the mean? Select one: a.100 b.28 C.24 d.80
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