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. Complete parts (a) through (c) below. 1258 1132 a) Check the assumptions and conditions for inference. Check the data for independence. Choose the correct answer below. Ο A. 0+ 900 1219 1356 OA. The data are from a random sample, so one can assume that they are not independent. OB. The sample is less than 10% of the population, so one can assume that the data are not independent. OC. The sample is less than 10% of the population, so one can assume that the data are independent. D. The data are from a random sample, so one can assume that they are independent. Construct a histogram of the data. Choose the correct graph below. Chips 1600 1087 1135 Q B. chips (Round to one decimal place as needed.) 0+ 900 Chips 1600 Evaluate the histogram. Choose the correct answer below. 1214 1325 Q Q OC. 50g 0+ 1419 1345 900 IL Chips 1600 Q Q 1270 1121 Bags D. 0- 900 Chips 1191 1295 1600 OA. The histogram is roughly unimodal and asymmetric, so one can assume that the data come from a population that follows a t-Student's model. OB. The histogram is roughly bimodal and asymmetric, so one can assume that the data come from a population that follows a t-Student's model. C. The histogram is roughly unimodal and symmetric, with no outliers, so one can assume that the data come from a population that follows a Normal model. OD. The histogram is roughly bimodal and symmetric, with no outliers, so one can assume that the data come from a population that follows a Normal model. b) Create a 95% confidence interval for the average number of chips in bags of Chips Ahoy! cookies. D

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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. Complete parts (a) through (c) below.

Data: 1258, 1219, 1087, 1214, 1419, 1270, 1191, 1132, 1356, 1135, 1325, 1345, 1121, 1295

---

a) Check the assumptions and conditions for inference.

Check the data for independence. Choose the correct answer below.

- A. The data are from a random sample, so one can assume that they are not independent.
- B. The sample is less than 10% of the population, so one can assume that the data are not independent.
- C. The sample is less than 10% of the population, so one can assume that the data are independent.
- D. The data are from a random sample, so one can assume that they are independent. (Correct)

Construct a histogram of the data. Choose the correct graph below.

Four histograms are shown, labeled A, B, C, and D. The correct histogram (B) shows a roughly unimodal and symmetric shape with no clear outliers.

Evaluate the histogram. Choose the correct answer below.

- A. The histogram is roughly unimodal and asymmetric, so one can assume that the data come from a population that follows a t-Student's model.
- B. The histogram is roughly bimodal and asymmetric, so one can assume that the data come from a population that follows a t-Student's model.
- C. The histogram is roughly unimodal and symmetric, with no outliers, so one can assume that the data come from a population that follows a Normal model. (Correct)
- D. The histogram is roughly bimodal and symmetric, with no outliers, so one can assume that the data come from a population that follows a Normal model.

b) Create a 95% confidence interval for the average number of chips in bags of Chips Ahoy! cookies.

\( \square \) chips

(Round to one decimal place as needed.)
Transcribed Image Text: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. Complete parts (a) through (c) below. Data: 1258, 1219, 1087, 1214, 1419, 1270, 1191, 1132, 1356, 1135, 1325, 1345, 1121, 1295 --- a) Check the assumptions and conditions for inference. Check the data for independence. Choose the correct answer below. - A. The data are from a random sample, so one can assume that they are not independent. - B. The sample is less than 10% of the population, so one can assume that the data are not independent. - C. The sample is less than 10% of the population, so one can assume that the data are independent. - D. The data are from a random sample, so one can assume that they are independent. (Correct) Construct a histogram of the data. Choose the correct graph below. Four histograms are shown, labeled A, B, C, and D. The correct histogram (B) shows a roughly unimodal and symmetric shape with no clear outliers. Evaluate the histogram. Choose the correct answer below. - A. The histogram is roughly unimodal and asymmetric, so one can assume that the data come from a population that follows a t-Student's model. - B. The histogram is roughly bimodal and asymmetric, so one can assume that the data come from a population that follows a t-Student's model. - C. The histogram is roughly unimodal and symmetric, with no outliers, so one can assume that the data come from a population that follows a Normal model. (Correct) - D. The histogram is roughly bimodal and symmetric, with no outliers, so one can assume that the data come from a population that follows a Normal model. b) Create a 95% confidence interval for the average number of chips in bags of Chips Ahoy! cookies. \( \square \) chips (Round to one decimal place as needed.)
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