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Customers at Costco spend an average of $130 per trip The Wall Street Journal October 6 2010 One of Costcos rivals would like

Customers at Costco spend an average of $130 per trip (The Wall Street Journal, October 6, 2010). One of Costco's rivals would like to determine whether Costco's customers spend more per trip. A survey of the receipts of 25 customers found that the sample mean was $135.25. Assume that the population standard deviation of spending is $10.50 and the spending follows a normal distribution (use the significance level 0.07).

Round your solutions for this Exhibit to 4 digits.

Question 26

1 pts

Refer to the Exhibit Costco Customers.

Provide the null and the alternative hypotheses.

Question 27

0.5 pts

Refer to the Exhibit Costco Customers.

Compute the test statistic.

Question 28

1 pts

Refer to the Exhibit Costco Customers.

Calculate the p-value for the test.

Question 29

1 pts

Refer to the Exhibit Costco Customers.

State your conclusion for the test using the p-value.

Apr 25 2020 View more View Less

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