Question

In 2014 an airline had 92% of all flights on time. After taking a random sample...

In 2014 an airline had 92% of all flights on time. After taking a random sample of 278 flights from 2015-present it was found that 259 were on time. Can we infer, at the 5% significance level, that their on-time performance has improved since 2014? Assume that the required conditions are satisfied

H0 : ______________________________

H1 : ______________________________

Conclusion: Reject H0 Accept H0

Reason for conclusion: _________________________________________________

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
A simple random sample of 100 flights Airline 1 showed that 64 were on time. A...
A simple random sample of 100 flights Airline 1 showed that 64 were on time. A simple random sample of 100 flights of Airline 2 showed that 80 were on time. Let p1 and p2 be the proportions of all flights that are were time for these two airlines. Is there evidence of a difference in the on-time rate for the two airlines? To determine this, test the hypotheses H0: p1 = p2 versus Ha: p1 ≠ p2 at a...
A random sample of 32 patients in a doctor’s office found that waiting times had a...
A random sample of 32 patients in a doctor’s office found that waiting times had a mean of 13 minutes with a standard deviation of 4.1 minutes. Based on this sample, a local doctor claims that the mean waiting time in their office is less than 15 minutes. At a 0.01 significance level, test the doctor's claim. Choose the correct Null & Alternative Hypothesis and Conclusion with appropriate justification: Select one: H0:μ=13 H1:μ<15 Since the P-Value is ≈0.41 and that...
An airline claims that its flights are consistently on time with an average delay of at...
An airline claims that its flights are consistently on time with an average delay of at most 11 minutes. It claims that the average delay is so consistent that the variance is no more than 92 minutes. Doubting the consistency part of the claim, a disgruntled traveler calculates the delays for his next 25 flights. The average delay for those 25 flights is 23 minutes with a standard deviation of 17 minutes. Assume α = 0.05. Is the traveler disputing...
Isabel Myers was a pioneer in the study of personality types. In a random sample of...
Isabel Myers was a pioneer in the study of personality types. In a random sample of 519 judges, it was found that 285 were introverts. Do the data indicate that a majority of judges are introverts? Use a = 0.05. State the null and alternate Do runners have lower heart rates, on average? Assume that non-runners have an average heart rate of 72 beats per minute. 1 State the null and alternate hypotheses. What is the level of significance? 2....
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...
3 SECURING THE WORKFORCE Diversity management in X-tech, a Japanese organisation This case is intended to...
3 SECURING THE WORKFORCE Diversity management in X-tech, a Japanese organisation This case is intended to be used as a basis for class discussion rather than as an illustration of the effective or ineffective handling of an administrative situation. The name of the company is disguised. INTRODUCTION In light of demographic concerns, in 2012, the Japanese government initiated an effort to change the work environment in order to secure the workforce of the future. Japan is world renowned for its...
2. SECURING THE WORKFORCE Diversity management in X-tech, a Japanese organisation This case is intended to...
2. SECURING THE WORKFORCE Diversity management in X-tech, a Japanese organisation This case is intended to be used as a basis for class discussion rather than as an illustration of the effective or ineffective handling of an administrative situation. The name of the company is disguised. INTRODUCTION In light of demographic concerns, in 2012, the Japanese government initiated an effort to change the work environment in order to secure the workforce of the future. Japan is world renowned for its...
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...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT