For the United States, the mean monthly Internet bill is $32.79 per household (CNBC,  January 18, 2006). A sample of 50 households in a southern state showed a sample mean of  $30.63. Use a population standard deviation of σ = $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

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