A pizza place recently hired additional drivers and as a result now claims that its average...
A pizza place recently hired additional drivers and as a result now claims that its average delivery time for orders is un minutes. Historically, the standard deviation for delivery time is 11.6 minutes. Using a = 0.01, complete parts a and bb a. Does this sample provide enough evidence to support the delivery time claim made by the pizza place? Determine the null and alternative hypotheses. Ho: H, :μ The Z-test statistic is (Round to two decimal places as needed.)...
(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?
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?...
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...
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...
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...
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...
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.
A manager of a pizza restaurant has changed the restaurant's delivery process in an effort to reduce the mean time between the order and completion of delivery from the current 30 minutes. A sample of 49 orders using the new delivery process yields a sample mean of 27.7 minutes and a sample standard deviation of 5 minutes. Complete parts (a) through (d) below. a. Using the critical value approach, at the 0.05 level of significance, is there evidence that the...
Provide an appropriate answer DuraBurn claims that its light bulbs have at least twice the average lifetime of SuperGlo's bulbs. The mean lifetime of the SuperGlo bulbs is 487 hours. A sample of 12 DuraBurn bulbs exhibited an average lifetimex = 1052 hours with a standard deviation s 201 hours. Using the hypotheses Ho 974 Ha 974 compute the value of the test statistic, and find the P-value for the sample. Using a-0.10, state your conclusions about DuraBurn's claim. Use...