You are performing a right-tailed t-test with a sample size of 19 If α=.01α=.01, and your test statistic is t=2.52t=2.52, do you: Hint: remember that if you have a proportion you use a z-test and a mean with an unknown population standard deviation, use a t-test. Reject Null Hypothesis Fail to Reject Null Hypothesis

You are performing a right-tailed t-test with a sample size of 19 If α=.01α=.01, and your test statistic is t=2.52t=2.52, do you: Hint: remember that if you have a proportion you use a z-test and a mean with an unknown population standard deviation, use a t-test. Reject Null Hypothesis Fail to Reject Null Hypothesis

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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2nd number solution
We want to conduct a hypothesis test of the claim that for middle-aged adults the population mean of their cholesterol levels mg is less than 193.2 mg We choose a random sample of such levels. The sample has a mean of 192.2 dL and a standard TP deviation of 18 mg TP For each of the following sampling scenarios, choose an appropriate test statistic for our hypothesis test on the population mean. Then calculate that statistic. Round your answers to two decimal places. (a) The sample has size 80, and it is from a non-normally distributed population with a known standard deviation of 19.3. O It is unclear which test statistic to use. (b)The sample has size 20, and it is from a normally distributed population with an unknown standard deviation. O It is unclear which test statistic to use.