We want to perform a hypothesis test of the statement that the population mean daily profit of a convenience store is more than490. So we record the daily gain for a random sample of days. The sample has a mean of498and a standard deviation of 77. For each of the following sampling cases, choose an appropriate test statistic for the hypothesis test on the population mean. Then calculate that statistic. Round answers to two decimal places. (to) The sample has size 16,and comes from a population that follows a normal distribution with an unknown standard deviation. -0 you It is not clear which test statistic to use. (b) The sample has a size of 100, and comes from a population that does not follow a normal distribution with a known standard deviation of 77. O z = you O It is not clear which test statistic to use.
We want to perform a hypothesis test of the statement that the population mean daily profit of a convenience store is more than490. So we record the daily gain for a random sample of days. The sample has a mean of498and a standard deviation of 77. For each of the following sampling cases, choose an appropriate test statistic for the hypothesis test on the population mean. Then calculate that statistic. Round answers to two decimal places. (to) The sample has size 16,and comes from a population that follows a normal distribution with an unknown standard deviation. -0 you It is not clear which test statistic to use. (b) The sample has a size of 100, and comes from a population that does not follow a normal distribution with a known standard deviation of 77. O z = you O It is not clear which test statistic to use.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Transcribed Image Text:We want to perform a hypothesis test of the statement that the population mean daily profit of a convenience store is more than490. So we record the daily gain
for a random sample of days. The sample has a mean of498and a standard deviation of77.
For each of the following sampling cases, choose an appropriate test statistic for the hypothesis test on the population mean. Then calculate that statistic. Round
answers to two decimal places.
(to) The sample has size16,and comes from a population that follows a normal distribution with an unknown standard
deviation.
● z = I
о
you
It is not clear which test statistic to use.
(b) The sample has a size of 100,and comes from a population that does not follow a normal distribution with a known
standard deviation of77.
Z
z=0
o
you
It is not clear which test statistic to use.
X
Ś
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