Question

A manufacturer of a certain brand of rice cereal claims that the average content of
Saturated fat is 1.5 grams per serving. You have taken a poll and the
sample of 30 elements yields an average of 1.7 grams, so you want to test
98% confidence level that the mean differs from 1.5 grams with one deviation
population of 0.2 g.
Perform a hypothesis test and conclude with the p-value.

Answer 1

given data are :-

sampe mean () = 1.7

population sd () = 0.2

sample size (n) = 30

hypothesis:-

[ claim ]

the test statistic be:-

p value be:-

[ in any blank cell of excel type =NORMSDIST(5.4772) ]

decision:-

p value = 0.000< 0.02 (alpha)

we reject the null hypothesis.There is enough evidence to claim that the mean differs from 1.5 grams .

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