5. Twenty five independent observations are taken from a normal distribution with mean 4, and variance 9. Another twenty-five independent observations are taken from a separate normal distribution with mean u, and variance 16. The mean of the first sample is 3.5 and the mean from the second sample is 5.0. Show that: a) The null hypothesis µ, = 5 is rejected by a significance test at the 5% level. b) The null hypothesis µ, = H, is accepted by a significance test at the 5% level.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
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5. Twenty five independent observations are taken from a normal distribution with mean µ, and variance 9. Another
twenty-five independent observations are taken from a separate normal distribution with mean µ, and variance 16. The
mean of the first sample is 3.5 and the mean from the second sample is 5.0. Show that:
a) The null hypothesis µ, = 5 is rejected by a significance test at the 5% level.
b) The null hypothesis µ, = µz is accepted by a significance test at the 5% level.
Transcribed Image Text:5. Twenty five independent observations are taken from a normal distribution with mean µ, and variance 9. Another twenty-five independent observations are taken from a separate normal distribution with mean µ, and variance 16. The mean of the first sample is 3.5 and the mean from the second sample is 5.0. Show that: a) The null hypothesis µ, = 5 is rejected by a significance test at the 5% level. b) The null hypothesis µ, = µz is accepted by a significance test at the 5% level.
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