Facebook: A study showed that two years ago, the mean time spent per visit to Facebook...

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Facebook: A study showed that two years ago, the mean time spent per visit to Facebook was 20.8 minutes. Assume the standard

math Statistics-And-Probability

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Answer 1

Answer #1

Solution :

The null and alternative hypothesis is

H₀ : $\mu$ = 20.8

H_a : $\mu$ < 20.8

This is the left tailed test .

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Answer 2

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