An average household in Ohio spends $197 per day. A sample of 60 households in Toledo, showed a sample mean daily expenditure of $189. Assume that the population standard deviation is $27.6. Test the claim that the average daily expenditure of the Ohio population differs from $197. Use a 91% confidence level.

Formulate the null and alternative hypotheses.

What is the rejection rule and the p-value?

Is the claim valid?