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7) A pizza chain advertises that they will deliver a pizza in no more than 20...
A Pizza delivery chain advertises that they will deliver your pizza in no more than 20 minutes from when the order is pl...
A Pizza delivery chain advertises that they will deliver your pizza in no more than 20 minutes from when the order is placed. Being a skeptic, you decide to round up a few friends to test and see if the delivery time is actually more than 20minutes on average. For the 15 friends who recorded the amount of time it takes for their pizza to be delivered, the average is 22.5 minutes with a standard deviation of 4.3 minutes. Perform...
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...
A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The...
A local eat-in pizza restaurant wants to investigate the possibility of starting to deliver pizzas. The owner of the store has determined that home delivery will be successful if the average time spent on the deliveries does not exceed 40 minutes. The owner has randomly selected 42 customers and has delivered pizzas to their homes in order to test if the mean delivery time actually exceeds 40 minutes. Suppose the P-value for the test was found to be 0.0281. State...
Acertain vehide emission inspection station advertises that the wall time for customers is less than 9...
Acertain vehide emission inspection station advertises that the wall time for customers is less than 9 minutes. A local resident wants to test this claim and collects a random sample of 49 wait times for customers at the testing Station He finds that the sample mean is 8.42 minutes, with a standard deviation of 3.8 minutes. Does the sample evidence support the inspection station's claim? Use the a 0.05 level of significance to test the advertised claim that the wall...
Pizza companies are competitive in the amount of time it takes to deliver the pizza. Is...
Pizza companies are competitive in the amount of time it takes to deliver the pizza. Is there a significant difference in the average time it takes to deliver a pizza between Pizza Hut and Dominos? The following data was collected from a sample of deliveries of both companies; test the hypothesis at a 0.01 level of significance with 10 degrees of freedom(assume unequal variances). Pizza Hut: sample mean = 18.68, sample standard deviation = 1.64, sample size = 5 Dominos:...
Pizza companies are competitive in the amount of time it takes to deliver the pizza. Is...
Pizza companies are competitive in the amount of time it takes to deliver the pizza. Is there a significant difference in the average time it takes to deliver a pizza between Pizza Hut and Dominos? The following data was collected from a sample of deliveries of both companies; test the hypothesis at a 0.01 level of significance with 10 degrees of freedom(assume unequal variances). Pizza Hut: sample mean = 18.68, sample standard deviation = 1.64, sample size = 5 Dominos:...
Pizza companies are competitive in the amount of time it takes to deliver the pizza. Is...
Pizza companies are competitive in the amount of time it takes to deliver the pizza. Is there a significant difference in the average time it takes to deliver a pizza between Pizza Hut and Dominos? The following data was collected from a sample of deliveries of both companies; test the hypothesis at a 0.01 level of significance with 10 degrees of freedom(assume unequal variances). Pizza Hut: sample mean = 18.68, sample standard deviation = 1.64, sample size = 5 Dominos:...
A Sports good company advertises that it will deliver your product within 15 days of purchase. A sample of 49 past custo...
A Sports good company advertises that it will deliver your product within 15 days of purchase. A sample of 49 past customers is taken. The average delivery time in the sample was 16.2 days with a standard deviation of 5.6 days. a) Test the claim of the company at the 5% level of significance. b) compute the probability of a Type II error if the true average delivery time is 17 days after purchase.
A certain vehicle emission inspection station advertises that the wait time for customers is less than 9 minutes
A certain vehicle emission inspection station advertises that the wait time for customers is less than 9 minutes. A local resident wants to test this claim and collects a random sample of 64 wat times for customers at the testing station. She finds that the sample mean is 7.52 minutes, with a standard deviation of 3.4 minutes. Does the sample evidence support the inspection station's claim? Use the α=0.01 level of significance to lest the advertised claim that the wait...
A manager of a pizza restaurant has changed the restaurant's delivery process in an effort to...
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 36 orders using the new delivery process yields a sample mean of 27.3 minutes and a sample standard deviation of 6 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...
Acertain vehide emission inspection station advertises that the wall time for customers is less than 9 minutes. A local resident wants to test this claim and collects a random sample of 49 wait times for customers at the testing Station He finds that the sample mean is 8.42 minutes, with a standard deviation of 3.8 minutes. Does the sample evidence support the inspection station's claim? Use the a 0.05 level of significance to test the advertised claim that the wall...
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