Question: Chips Ahoy! 1,000 Chips Challenge. As reported by B. Warner and J. Rutledge in the paper Checking the Chips Ahoy! Guarantee (Chance, Vol. 12, Issue

“Chips Ahoy! 1,000 Chips Challenge.” As reported by B. Warner and J. Rutledge in the paper “Checking the Chips Ahoy!

Guarantee” (Chance, Vol. 12, Issue 1, pp. 10–14), a random sample of forty-two 18-ounce bags of Chips Ahoy! cookies yielded a mean of 1261.6 chips per bag with a standard deviation of 117.6 chips per bag.

a. Determine a 95% confidence interval for the mean number of chips per bag for all 18-ounce bags of Chips Ahoy! cookies, and interpret your result in words.

b. Can you conclude that the average 18-ounce bag of Chips Ahoy!

cookies contains at least 1000 chocolate chips? Explain your answer.

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