A company announced a 1000 Chips Trial,\" claiming that every 18-ounce bag of it

Question

A company announced a 1000 Chips Trial," claiming that every 18-ounce bag of its cookies contained at least 1000 chocolate chips. Students purchased random bags of cookies from different stores and counted the number of chips in each bag. Some of the data is shown below. Complete parts a) through c) 1032 1254 1114 1299 1195 1313 1256 1302 1283 1426 900 1600 Chips Histogranm a) Check the assumptions and conditions for inference Is the independence assumption met? Y Yes 0 Is the randomization condition met or is the sample suitably representative? Yes Is the 10% condition met? 0 yYes Is the nearly normal condition met? Y Yes 0 b) Create a 95% confidence interval for the average number of chips

Explanation / Answer

The statistical software output for this problem is:

One sample T confidence interval:
: Mean of variable

95% confidence interval results:

Hence,

95% confidence interval will be:

1168.3 < < 1326.5 chips

Variable Sample Mean Std. Err. DF L. Limit U. Limit Data 1247.4 34.987045 9 1168.2538 1326.5462

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