Question

The Los Angeles County Metropolitan Transportation Authority has set a bus mechanical reliability goal of 3,900...

The Los Angeles County Metropolitan Transportation Authority has set a bus mechanical reliability goal of 3,900 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 100 buses resulted in a sample mean of 3,975 bus miles and a sample standard deviation of 275 bus miles. At 0.01 level of significance, is there evidence that the population mean bus miles is greater than 3,900 bus miles? Please show your work. Thank you!

Homework Answers

Answer #1

I have answered the question below

Please up vote for the same and thanks!!!

Do reach out in the comments for any queries

Answer:

Given that

µ=3900, number=100, Xbar=3975, SD=275 LOS=0.01

Critical value=Z0.01=2.576

Null hypothesis: µ=3900

Alternative hypothesis: µ>3900

Test statistics = Xbar - u /(SD/SQRT(N)

Z=(3975-3900)/(275/sqrt(100)) = 2.7272

Rejection rule is that if null hypothesis for test statistic > Critical value

We can infer that since Z=2.7272> Z0.01=2,576 we reject the null hypothesis and conclude that there is enough evidence to support the claim that the population mean bus miles is more than 3,900 bus miles

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...
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,900 bus miles. Bus...
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,900 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 100 buses resulted in a sample mean of 3,925 bus miles and a sample standard deviation of 225 bus miles. Complete parts​ (a) and​ (b) below. a. Is there evidence that the population mean bus miles is more than 3,900 bus​ miles? (Use a 0.10...
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,800 bus miles. Bus...
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,800 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 100 buses resulted in a sample mean of 3,850 bus miles and a sample standard deviation of 275 bus miles. Determine the​ p-value and interpret its meaning.
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,700 bus miles. Bus...
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,700 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 100 buses resulted in a sample mean of 3,750 bus miles and a sample standard deviation of 275 bus miles. a. Is there evidence that the population mean bus miles is more than 3,700 bus​ miles? (Use a 0.10 level of​ significance.) State the null...
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,800 bus miles. Bus...
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,800 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 100 buses resulted in a sample mean of 3,825 bus miles and a sample standard deviation of 175 bus miles. Complete parts​ (a) and​ (b) below.
The Los Angeles County Metropolitan Transportation Authority (branded as LA Metro) is an agency that operates...
The Los Angeles County Metropolitan Transportation Authority (branded as LA Metro) is an agency that operates public transportation in the Los Angeles metropolitan area. One of the key to satisfying bus riders is that the busses run on schedule. One important part of this requires that the variation in travel time for the bus route to be controlled. Suppose on one particular bus route, LA Metro wants the standard deviation in travel time to be 2 minutes. To test this,...
Delta airlines case study Global strategy. Describe the current global strategy and provide evidence about how...
Delta airlines case study Global strategy. Describe the current global strategy and provide evidence about how the firms resources incompetencies support the given pressures regarding costs and local responsiveness. Describe entry modes have they usually used, and whether they are appropriate for the given strategy. Any key issues in their global strategy? casestudy: Atlanta, June 17, 2014. Sea of Delta employees and their families swarmed between food trucks, amusement park booths, and entertainment venues that were scattered throughout what would...
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