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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.

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.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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We want to conduct a hypothesis test of the claim that the population mean daily profit of a convenience store is more than 557 dollars. So, we record the daily profit for a random sample of days. The sample has a mean of 562 dollars and a standard deviation of 74 dollars. 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 13, and it is from a normally distributed population with a known standard deviation of 78. O z = O t = 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 z = O t = 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 daily profit of a convenience store is more than 557 dollars. So, we record the daily profit for a random sample of days. The sample has a mean of 562 dollars and a standard deviation of 74 dollars. 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 13, and it is from a normally distributed population with a known standard deviation of 78. O z = O t = 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 z = O t = O It is unclear which test statistic to use.
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