VII. The NYC MTA claims the average wait time for an F train after midnight is less than 21 minutes. A sample of 15 commuters are polled and it is determined the average wait is 24 minutes with a standard deviation of 9 minutes. Do we accept the MTA's claim?

MATLAB: An Introduction with Applications
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a) State the null and alternate hypothesis.
b) Draw a picture of regions of rejection and non-rejection, and find critical value(s).
c) Calculate a test statistic.
d) Make a decision whether or not to reject the null hypothesis.
Transcribed Image Text:a) State the null and alternate hypothesis. b) Draw a picture of regions of rejection and non-rejection, and find critical value(s). c) Calculate a test statistic. d) Make a decision whether or not to reject the null hypothesis.
VII. The NYC MTA claims the average wait time for an F train after midnight is less than 21
minutes. A sample of 15 commuters are polled and it is determined the average wait is 24
minutes with a standard deviation of 9 minutes. Do we accept the MTA's claim?
Transcribed Image Text:VII. The NYC MTA claims the average wait time for an F train after midnight is less than 21 minutes. A sample of 15 commuters are polled and it is determined the average wait is 24 minutes with a standard deviation of 9 minutes. Do we accept the MTA's claim?
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