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We want to conduct a hypothesis test of the claim that the population mean reading speed of second graders is different from 30.7 words per minute. So, we choose a random sample of students' reading speeds. The sample has a mean of 30.8 words per minute and a standard deviation of 3.7 words per minute. 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 10, and it is from a normally distributed population with a known standard deviation of 2.7. O= =0 O It is unclear which test statistic to use. (b) The sample has size 15, and it is from a population with a distribution about which we know very little. It is unclear which test statistic to use.

We want to conduct a hypothesis test of the claim that the population mean reading speed of second graders is different from 30.7 words per minute. So, we choose a random sample of students' reading speeds. The sample has a mean of 30.8 words per minute and a standard deviation of 3.7 words per minute. 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 10, and it is from a normally distributed population with a known standard deviation of 2.7. O= =0 O It is unclear which test statistic to use. (b) The sample has size 15, and it is from a population with a distribution about which we know very little. 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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Español We want to conduct a hypothesis test of the claim that the population mean reading speed of second graders is different from 30.7 words per minute. So, we choose a random sample of students' reading speeds. The sample has a mean of 30.8 words per minute and a standard deviation of 3.7 words per minute. For each of the following sampling scenarios, choose an áppropriate 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 10, and it is from a normally distributed population with a known standard deviation of 2.7. = Z It is unclear which test statistic to use. Aa (b) The sample has size 15, and it is from a population with a distribution about which we know very little. O z It is unclear which test statistic to use.
Transcribed Image Text:Español We want to conduct a hypothesis test of the claim that the population mean reading speed of second graders is different from 30.7 words per minute. So, we choose a random sample of students' reading speeds. The sample has a mean of 30.8 words per minute and a standard deviation of 3.7 words per minute. For each of the following sampling scenarios, choose an áppropriate 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 10, and it is from a normally distributed population with a known standard deviation of 2.7. = Z It is unclear which test statistic to use. Aa (b) The sample has size 15, and it is from a population with a distribution about which we know very little. O z It is unclear which test statistic to use.
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