Question

A
researcher wants to check the claim that convicted burglars spend
less than 8.7 months in jail on average.She takes a random sample
of 67 such cases from court files and finds that the mean is 16.8
months with a standard deviation of 7.3 months. Is there enough
evidence to support the claim using a level of significance of
1%?

Answer #1

Dr. Harper roe wants to check the claim that convicted burglars
in gularte county spend an average of 18.7 months in jail. he takes
a random sample of 11 cases from the gularte county court files and
finds that a mean of 20.5 months with a standard deviation of 7.9
months is the time burglars spend in jail test the claim that the
mean time spent is 18.7 months at the 0.05 significance level.
A) Claim, null hypo, alternative hypo...

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