Answer to Question #92316 in Statistics and Probability for Lucia

Question

In Namibia, the mean monthly internet bill charged by Telecom is $320.79 per household. A sample of 120 household in windhoek showed a sample mean of $300.63. Use a sample standard deviation of s=$50.60.
A) Using a 98% confidence level, apply the Test Statistics Approach to determine whether the sample data supports the conclusion that the mean monthly internet bill in windhoek is less than the national mean of $320.79?

B) suppose the actual mean of the mean of the monthly internet bill is now $315.00. what is the probability of commiting a type II error?

Answer 1

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