We want to conduct a hypothesis test of the claim that the population mean daily profit of a convenience store is more than 558 dollars. So, we record the daily profit for a random sample of days. The sample has a mean of 546 dollars and a standard deviation of 77 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 19, and it is from a normally distributed population with a known standard deviation of 77. 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. 91-1 It is unclear which test statistic to use. Check Save For Later Submit Assignment

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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 558
dollars. So, we record the daily profit for a random sample of days. The sample has a mean of 546 dollars and a standard deviation of
77 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 19, and it is from a normally distributed population with a known standard deviation of 77.
Oz =
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.
It is unclear which test statistic to use.
Check
Save For Later
Submit Assignment
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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 558 dollars. So, we record the daily profit for a random sample of days. The sample has a mean of 546 dollars and a standard deviation of 77 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 19, and it is from a normally distributed population with a known standard deviation of 77. Oz = 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. It is unclear which test statistic to use. Check Save For Later Submit Assignment 2022 McGraw HIll LLC. All Rights Reserved. Terms of Use Privacy Center Accessibility acer
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