Question

A local Internet company claims that they offer wifi speeds in residential settings of 250 MBPs....

A local Internet company claims that they offer wifi speeds in residential settings of 250 MBPs. A consumer group suspects the actual average is far less than 250 MBPs. They take a sample of 20 wifi signals by the Internet company and calculate the average to be 260 MBPs. The signals are normally distributed with a standard deviation of 18. State the appropriate null and alternative hypotheses. Compute the value of the test statistic. Compute the p-value. What can we conclude at the 5% significance level regarding the null hypothesis?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A local pizza place claims that they average a delivery time of 7.32 minutes. To test...
A local pizza place claims that they average a delivery time of 7.32 minutes. To test this claim, you order 11 pizzas over the next month at random times on random days of the week. You calculate the average delivery time and sample standard deviation from the 11 delivery times (minutes), and with the sample mean and sample standard deviation of the time (minutes), you create a 95% confidence interval of (7.648, 9.992). (delivery time is normally distributed) a. What...
A delivery company claims that the mean time it takes to deliver frozen food between two...
A delivery company claims that the mean time it takes to deliver frozen food between two particular cities is 4 hours. A consumer advocacy group wishes to show at the 5% level that the mean time is greater than 4 hours. A random sample of 50 deliveries yielded a sample mean of 4.2 hours with a standard deviation of 0.5 hours. 1. Set up the null and alternative hypotheses. 2. Compute the test statistic. 3. State the p-value for the...
Problem An automobile maker claims that its newest Raptor V5s (a sports car) have a mean...
Problem An automobile maker claims that its newest Raptor V5s (a sports car) have a mean fuel efficiency of 48.5 miles per gallon on highways. A consumer advocate suspects, however, that the actual mean fuel efficiency of the Raptor V5s on highways is less than 48.5 miles per gallon. To test this hypothesis, the consumer advocate obtains a random sample of 35 Raptor V5s, measures their fuel efficiencies on highways, and calculates the sample mean fuel efficiency to be 46.2...
4. (15pts) An insurance company claims that the average annual health cost for the families of...
4. (15pts) An insurance company claims that the average annual health cost for the families of all workers is $210. However, the Union representing these workers claims that the annual cost is greater than the amount stated by this insurer. JMP output for the data analysis was shown below. (a) Use the JMP output below, compute a 95% CI for the true annual mean cost of health care for the families of all workers. (5pts) (b) Use the JMP results...
A​ government-sponsored organization that was established in 1938 after the Depression to provide local banks with...
A​ government-sponsored organization that was established in 1938 after the Depression to provide local banks with money from the federal government to be used for residential mortgages in an effort to increase homeownership rates. As lending standards have tightened during the most recent housing market​ crisis, credit scores for borrowers of approved mortgages have increased. In​ 2012, the average credit score for loans that were purchased by the company was 778. A random sample of 25 mortgages recently purchased by...
Sign In INNOVATION Deep Change: How Operational Innovation Can Transform Your Company by Michael Hammer From...
Sign In INNOVATION Deep Change: How Operational Innovation Can Transform Your Company by Michael Hammer From the April 2004 Issue Save Share 8.95 In 1991, Progressive Insurance, an automobile insurer based in Mayfield Village, Ohio, had approximately $1.3 billion in sales. By 2002, that figure had grown to $9.5 billion. What fashionable strategies did Progressive employ to achieve sevenfold growth in just over a decade? Was it positioned in a high-growth industry? Hardly. Auto insurance is a mature, 100-year-old industry...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT