Question

A SRS of 20 commuters to the Los Angeles metropolitan area are selected, and each is...

A SRS of 20 commuters to the Los Angeles metropolitan area are selected, and each is asked how far they commute to work each day. In the sample, the mean distance is 64 miles and the standard deviation is 12 miles. Assume that in the population of all commuters to the Los Angeles metropolitan area, daily commuting distance follows a normal distribution, with some mean μ. 23. We are interested in a 95% confidence interval for the population mean commuting distance. The margin of error associated with the confidence interval is a. 2.68 miles. b. 4.64 miles. c. 5.62 miles. d. 6.84 miles. 24. A 90% confidence interval for the population mean commuting distance based on these data is a. 64 ± 2.68 miles. b. 64 ± 4.64 miles. c. 64 ± 5.62 miles. d. 64 ± 6.84 miles.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The Los Angeles County Metropolitan Transportation Authority has set a bus mechanical reliability goal of 3,013...
The Los Angeles County Metropolitan Transportation Authority has set a bus mechanical reliability goal of 3,013 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 64 buses resulted in a sample mean of 3,295 bus miles and a sample standard deviation of 825 bus miles. Is there evidence that the population mean bus miles is greater than 3,013 bus miles? Use α=0.05 level of significance. 1. What...
DO NOT RESPOND UNLESS YOU INTEND TO ANSWER EACH QUESTION 1. A university dean is interested...
DO NOT RESPOND UNLESS YOU INTEND TO ANSWER EACH QUESTION 1. A university dean is interested in determining the proportion of students who receive some sort of financial aid. Rather than examine the records for all students, the dean randomly selects 200 students and finds that 118 of them are receiving financial aid. The 95% confidence interval for p is 0.59 ± 0.07. Interpret this interval. a. We are 95% confident that the true proportion of all students receiving financial...
What tools could AA leaders have used to increase their awareness of internal and external issues?...
What tools could AA leaders have used to increase their awareness of internal and external issues? ???ALASKA AIRLINES: NAVIGATING CHANGE In the autumn of 2007, Alaska Airlines executives adjourned at the end of a long and stressful day in the midst of a multi-day strategic planning session. Most headed outside to relax, unwind and enjoy a bonfire on the shore of Semiahmoo Spit, outside the meeting venue in Blaine, a seaport town in northwest Washington state. Meanwhile, several members of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT