viridiangreen viridiangreen

06-11-2022
Mathematics

Answered

A child welfare officer asserts that the mean sleep of young babies is 14 hours a day. A random
sample of 64 babies shows that the mean sleep was only 13 hours 30 minutes with standard
deviation of 3 hours. At 5% level of significance, test the assertion that the mean sleep of babies is
less than 14 hours a day

Answer :

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