(a) The sample has size 14, and it is from a normally distributed population with a known standard deviation of 78. ON= 0 Ot= 0 O It is unclear which test statistic to use. (b) The sample has size 17, and it is from a normally distributed population with an unknown standard deviation. Z = 0 t = =0 O It is unclear which test statistic to use.

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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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 517 dollars. So, we record the daily profit for a random sample of days. The sample has a mean of 498 dollars and a standard deviation of 72 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 14, and it is from a normally distributed population with a known standard deviation of 78.
OZ = 0
0
Ot=
O It is unclear which test statistic to use.
(b) The sample has size 17, and it is from a normally distributed population with an unknown standard deviation.
OZ =
t =
0
O It is unclear which test statistic to use.
Transcribed Image Text:(a) The sample has size 14, and it is from a normally distributed population with a known standard deviation of 78. OZ = 0 0 Ot= O It is unclear which test statistic to use. (b) The sample has size 17, and it is from a normally distributed population with an unknown standard deviation. OZ = t = 0 O It is unclear which test statistic to use.
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