Chips Ahoy In 1998, as an advertising campaign, theNabisco Company announced a “1000 Chips Challenge,”claiming that every 18-ounce bag of their Chips Ahoycookies contained at least 1000 chocolate chips.Dedicated Statistics students at the Air Force Academy(no kidding) purchased some randomly selected bags ofcookies, and counted the chocolate chips. Some of theirdata are given below. (Chance, 12, no. 1[1999])1219 1214 1087 1200 1419 1121 1325 13451244 1258 1356 1132 1191 1270 1295 1135a) Check the assumptions and conditions for inference.Comment on any concerns you have.b) Create a 95% confidence interval for the averagenumber of chips in bags of Chips Ahoy cookies.c) What does this evidence say about Nabisco’s claim?Use your confidence interval to test an appropriatehypothesis and state your conclusion.
Chips Ahoy In 1998, as an advertising campaign, the
Nabisco Company announced a “1000 Chips Challenge,”
claiming that every 18-ounce bag of their Chips Ahoy
cookies contained at least 1000 chocolate chips.
Dedicated Statistics students at the Air Force Academy
(no kidding) purchased some randomly selected bags of
cookies, and counted the chocolate chips. Some of their
data are given below. (Chance, 12, no. 1[1999])
1219 1214 1087 1200 1419 1121 1325 1345
1244 1258 1356 1132 1191 1270 1295 1135
a) Check the assumptions and conditions for inference.
Comment on any concerns you have.
b) Create a 95% confidence interval for the average
number of chips in bags of Chips Ahoy cookies.
c) What does this evidence say about Nabisco’s claim?
Use your confidence interval to test an appropriate
hypothesis and state your conclusion.
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