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decimal places. (a) The sample has size 18, and it is from a normally distributed population with an unknown standard deviation. ot = O It is unclear which test statistic to use. (b) The sample has size 15, and it is from a normally distributed population with a known standard deviation of 0.45. O z = ot= It is unclear which test statistic to use.

decimal places. (a) The sample has size 18, and it is from a normally distributed population with an unknown standard deviation. ot = O It is unclear which test statistic to use. (b) The sample has size 15, and it is from a normally distributed population with a known standard deviation of 0.45. O z = ot= It is unclear which test statistic to use.

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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We want to conduct a hypothesis test of the claim that the population mean time it takes drivers to react following the application of brakes by the driver in front of them is less than 2.2 seconds. So, we choose a random sample of reaction time measurements. The sample has a mean of 2.1 seconds and a standard deviation of 0.4 seconds. 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 l18, and it is from a normally distributed population with an unknown standard deviation. t = O It is unclear which test statistic to use. (b) The sample has size 15, and it is from a normally distributed population with a known standard deviation of 0.45. O z O It is unclear which test statistic to use.
Transcribed Image Text:We want to conduct a hypothesis test of the claim that the population mean time it takes drivers to react following the application of brakes by the driver in front of them is less than 2.2 seconds. So, we choose a random sample of reaction time measurements. The sample has a mean of 2.1 seconds and a standard deviation of 0.4 seconds. 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 l18, and it is from a normally distributed population with an unknown standard deviation. t = O It is unclear which test statistic to use. (b) The sample has size 15, and it is from a normally distributed population with a known standard deviation of 0.45. O z O It is unclear which test statistic to use.
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