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Activity 1 - Z test of hypothesis for the mean ( known) In the US, the mean monthly internet bill is $32.79 per household. A
Activity 1 - Z test of hypothesis for the mean ( known)
In the US, the mean monthly internet bill is $32.79 per household. A sample of 50 households in a southern state showed a sample mean of $30.63. Use a population standard deviation of = $5.60.
(a)Formulate hypotheses for a test to determine whether the sample data support the conclusion that the mean monthly internet bill in the southern state is less than the national mean of $32.79.
(b)What is the value of the test statistic?
(c)What is p-value?
(d)At = 0.01, what is your conclusion?
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