STAT 250 (3) Quiz: Chapter 9 Review Quiz Time Litmit: 01.30.00 Submit Quz This Q
ID: 3320036 • Letter: S
Question
STAT 250 (3) Quiz: Chapter 9 Review Quiz Time Litmit: 01.30.00 Submit Quz This Question: 1 pt 3 of 11 (2 complete) This Quiz: 11 pts possible A statistics instructor randomly selected four bags of oranges, each bag labeled 10 pounds, and weighed the bags. They weighed 9.1, 9.5, 9.4, and 9.4 pounds.Assume that the distribution of weights is Normal. Find a 95% confidence interval for the mean weight of all bags of oranges. Use technology for your calculations. Answer parts a and b below. a. Choose the correct interpretation of the confidence interval below and, if necessary, fill in the answer boxes to complete your choice. O A. and We are 95% confident the population mean is between B. We are 95% confident that the sample mean is between and C. There is a 95% chance that all intervals will be between and D. The requirements for constructing a confidence interval are not satisfied Type integers or decimals rounded to the nearest thousandth as needed. Use ascending order.) b. Does the interval capture 10 pounds? Is there enough evidence to reject the null hypothesis that the population mean weight is 10 pounds? Explain your answer. A. No, it does not capture 10. Reject the claim of 10 pounds because 10 is not in the interval B. Yes, it does capture 10. Reject the claim of 10 pounds because 10 is in the interval OCNo it does not canture 10 Do not reiect the claim of 10 pounds hecause 10 is not in the intervalExplanation / Answer
The statistical software output for this problem is:
One sample T confidence interval:
: Mean of variable
95% confidence interval results:
Hence,
Option A; 9.074; 9.626
Variable Sample Mean Std. Err. DF L. Limit U. Limit Data 9.35 0.08660254 3 9.0743921 9.6256079Related Questions
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