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according to beautiful bride magazine the average age of a groom is now 26 years a...

according to beautiful bride magazine the average age of a groom is now 26 years a sample of 16 prospective grooms in chicago revaled that their avarage age was 26.6 years with a standard deviation of 5.3 years at a = 0.05 what is the test value
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Answer #1

Given

n = 16 , , S =5.3

claim : The average age of a groom is now 26 years

Null and alternative hypothesis is

Level of significance = 0.05

Here population standard deviation is not known so we use t-test statistic.

Test statistic is

Degrees of freedom = n - 1 = 16 -1 = 15

P-value = 0.657 ( using t table)

P-value , Failed to Reject H0

conclusion : There is sufficient evidence to conclude that the average age of a groom is now 26 years

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