In a random sample of people, the mean driving distance to work was miles and the standard deviation was miles. Assume the popu
lation is normally distributed and use the t-distribution to find the margin of error and construct a % confidence interval for the population mean . Interpret the results. Identify the margin of error. nothing ▼ square miles miles per hour miles (Round to one decimal place as needed.) Construct a % confidence interval for the population mean. (Round to one decimal place as needed.) Interpret the results. Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. nothing% of all random samples of people from the population will have a mean driving distance to work (in miles) that is between the interval's endpoints. B. It can be said that nothing% of the population has a driving distance to work (in miles) that is between the interval's endpoints. C. With nothing% confidence, it can be said that most driving distances to work (in miles) in the population are between the interval's endpoints. D. With nothing% confidence, it can be said that the population mean driving distance to work (in miles) is between the interval's endpoints.
1 answer:
Full question attached
Answer:
D. With 99% confidence, it can be said that the population mean driving distance to work (in miles) is between the interval's endpoints
Step-by-step explanation:
The new confidence interval is narrower than the confidence interval for the t-distribution and the center is 21.7
please note that the options chosen are different for the attachment and the question here but are same answer
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