(Answered) A rollercoasters auditors estimate that the average daily

Statistics

A Rollercoaster's auditors estimate that the average daily loss from those illegally riding without tickets is never more than $200, but wants to determine the accuracy of this statistic. The company researcher takes a random sample of losses over 49 days and finds that = $187 and s = $30.

a) Test at α = 0.05.

b) Construct a 95% confidence interval of losses.

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