ZuoTi.Pro
Question

In an advertisement, a pizza shop claims that its mean delivery time is no more than 30 minutes. A random selection of 36 delivery times has a sample mean of 31.5 minutes. Assume the population standard deviation is 3.5 minutes and alpha is 0.02. ved Answer the following using the classical approach for hypothesis testing. Indicate the symbol in the Ha statement. Calculate the test statistic, z. Is the critical region(s) left tailed, right tailed, or two tailed? As What is the critical value(s)? If there is more than one, then separate with a comma. Save MacBook
Do you reject or fail to reject Ho? Is there enough evidence to support the pizza shops claim? Yes or No Save Previous Page Next Page Page Save All Responses Go to Submit Quiz MacBook
math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

null hypothesis:Ho Alternate Hypothesis:Ha 30 30 for 0.02 level with right tailed test, critical value of z- Decision rule: 2.054 reject Ho if test statistic z>2.054 population mean sample mean sample size population 30 31.50 36.00 3.500 std deviation standard errror of meano-o/Vn- 0.5833 test statistic z (X-μ)/σ,- 2.57

1) symbol in Ha : >

2)test statistic z=2.57

3)critical region: right tailed

4)critical values =2.054

5)

reject or fail to reject ? -reject

6)No

0 0
Add a comment
Know the answer?
Add Answer to:
In an advertisement, a pizza shop claims that its mean delivery time is no more than...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • In a advertisement, a pizza shop claims that its mean delivery time is less than 20...

    In a advertisement, a pizza shop claims that its mean delivery time is less than 20 minutes. of A random selection 50 delivery times has a sample mean of 22 minutes and a standard deviation of 2.1 minutes. Is there enough evidence to support the claim at = 0.005. Find: Question 5 The null hypothesis ( H0) 22 min 22 min 20 min 20 min Question 6 The alternative hypothesis ( H0) 22 min 20 min 22 min 20 min...

  • (10 pts) In an advertisement, a pizza shop claims that its mean delivery time is less...

    (10 pts) In an advertisement, a pizza shop claims that its mean delivery time is less than 30 minutes. A random sample of 36 delivery imes has a mean of 28.5 minutes and a standard deviation of 3.5 minutes. Is there enough evidence to support the claim at α-.05 ? (a) Set up the null and alternative hypotheses (b) Find the test statistic. (c) Find the rejection region and state your conclusion. (d) What is the P-value for this test?

  • Just need e (10 pts) In an advertisement, a pizza shop claims that its mean delivery...

    Just need e (10 pts) In an advertisement, a pizza shop claims that its mean delivery time is less thai 30 A aopleof 36 delivry of 28.5 mim ELAL and a standard deviation of 3.5 minutes. Is there enough evidence to support the claim at a -.05? e) Find the probability of type II error when the true mean is 29.

  • Solve only part E (10 pts) In an advertisement, a pizza shop claims that its mean...

    Solve only part E (10 pts) In an advertisement, a pizza shop claims that its mean delivery time is less than 30 minutes. A random sample of 36 delivery times has a mean of 28.5 minutes and a standard deviation of 3.5 minutes. Is there enough evidence to support the claim at a.05? (a) Set up the null and alternative hypotheses. (b) Find the test statistic. (c) Find the rejection region and state your conclusion. (d) What is the P-value...

  • A pizza shop claims its average home delivery time is 29 minutes. A sample of 30...

    A pizza shop claims its average home delivery time is 29 minutes. A sample of 30 deliveries had a sample average of 31.6 minutes. Assume the population standard deviation for the​ shop's deliveries is 5.95 minutes. Complete parts a and b below. a. Is there support for the​ shop's claim using the criteria that the sample average of 31.6 minutes falls within the symmetrical interval that includes​ 95% of the sample means if the true population mean is 29 ​minutes?...

  • A bank claims that the mean waiting time in line is less than 4.1 minutes. A...

    A bank claims that the mean waiting time in line is less than 4.1 minutes. A random sample of 60 customers has a mean of 4 minutes. Assuming a population standard deviation of 0.6 minute, test the bank's claim with an ? = 0.05 level of confidence. ?0 = ___________________________________ ?? = ___________________________________ Test Statistic = __________________________ Alpha level of significance= __________________ Classical Critical Value = ____________________ P-value = _______________________________ ________Conclusion: A) reject ?0 B) fail to reject ?0 ________Interpretation:...

  • A fitness magazine claims that the mean cost of a yoga session is not more than...

    A fitness magazine claims that the mean cost of a yoga session is not more than $13. You work for a consumer group and are asked to test this claim. You find that a random sample of 27 yoga sessions has a mean cost of $14.32 and a standard deviation of $2.40. At ?-0.025, do you have enough evidence to reject the magazine's claim? Assume the population is normally distributed. a. Ho HA b. Find the critical value (s) and...

  • You and some of your friends have decided to test the validity of an advertisement by...

    You and some of your friends have decided to test the validity of an advertisement by a local pizza restaurant, which claims it delivers to the dormitories faster than a local branch operated by a national chain. Both the local pizza restaurant and the national chain are located across the street from your college campus. The variable of interest is delivery time in minutes from the time the pizza is ordered to when it is delivered. You collect the data...

  • A local pizza place claims that they average a delivery time of 10.14 minutes. To test...

    A local pizza place claims that they average a delivery time of 10.14 minutes. To test this claim, you order 13 pizzas over the next month at random times on random days of the week. You calculate that the average delivery time is 8.59 minutes with a standard deviation of 1.721 minutes. You create a 99% confidence interval of (7.13, 10.05). Of those listed below, what is the best conclusion you can make? Question 7 options: 1) The percentage of...

  • 1. A manufacturer claims that the mean lifetime of its lithium battery is 1000 hours. A...

    1. A manufacturer claims that the mean lifetime of its lithium battery is 1000 hours. A homeowner selects 40 batteries and finds the mean lifetime to be 990 hours with a standard deviation of 80 hours. Test the manufacturer's claim. Use alpha = 0.05. a.  Calculate the test statistics. test statistics= (Round your answer to the nearest hundredth) Answer is not 0.79 or 0.80 2. A local juice manufacturer distributes juice in bottles labeled 12 ounces. A government agency thinks that...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT