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Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes, To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a= 0.025 that the delivery times vary more than the owner desires? Step 4 of 5: State your conclusion using a significance level of 0.05. The alternative hypothesis for this problem is H: o > 25. O Tables Keypad Answer 1 Point Keyboard Shortcut O Reject Ho and conclude that the variance of delivery time is significantly greater than 5. O Reject Ho and conclude that the standard deviation of delivery time is significantly greater than 25. O Reject Ho and conclude that the variance of delivery time is significantly less than 5. O Reject Ho and conclude that the variance of delivery time is significantly less than 25. O None of the above

Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes, To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a= 0.025 that the delivery times vary more than the owner desires? Step 4 of 5: State your conclusion using a significance level of 0.05. The alternative hypothesis for this problem is H: o > 25. O Tables Keypad Answer 1 Point Keyboard Shortcut O Reject Ho and conclude that the variance of delivery time is significantly greater than 5. O Reject Ho and conclude that the standard deviation of delivery time is significantly greater than 25. O Reject Ho and conclude that the variance of delivery time is significantly less than 5. O Reject Ho and conclude that the variance of delivery time is significantly less than 25. O None of the above

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes. To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a= 0.025 that the delivery times vary more than the owner desires? Step 4 of 5: State your conclusion using a significance level of 0.05. The alternative hypothesis for this problem is H: o > 25. O Tables E Keypad Answer 1 Point Keyboard Shortcut O Reject Ho and conclude that the variance of delivery time is significantly greater than 5. O Reject Ho and conclude that the standard deviation of delivery time is significantly greater than 25. O Reject Ho and conclude that the variance of delivery time is significantly less than 5. O Reject Ho and conclude that the variance of delivery time is significantly less than 25. O None of the above Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes. To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a 0.025 that the delivery times vary more than the owner desires? Step 5 of 5: Calculate a 90% confidence interval for the variance of delivery times. Round your answers to four decimal places, O Tables E Keypad Answer 1 Point Keyboard Shortcuts From To
Transcribed Image Text:Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes. To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a= 0.025 that the delivery times vary more than the owner desires? Step 4 of 5: State your conclusion using a significance level of 0.05. The alternative hypothesis for this problem is H: o > 25. O Tables E Keypad Answer 1 Point Keyboard Shortcut O Reject Ho and conclude that the variance of delivery time is significantly greater than 5. O Reject Ho and conclude that the standard deviation of delivery time is significantly greater than 25. O Reject Ho and conclude that the variance of delivery time is significantly less than 5. O Reject Ho and conclude that the variance of delivery time is significantly less than 25. O None of the above Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes. To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a 0.025 that the delivery times vary more than the owner desires? Step 5 of 5: Calculate a 90% confidence interval for the variance of delivery times. Round your answers to four decimal places, O Tables E Keypad Answer 1 Point Keyboard Shortcuts From To
Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes, To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a = 0.025 that the delivery times vary more than the owner desires? Step 1 of 5: Calculate the test statistic for this problem? Round your answer to two decimal places: Answer Awred 1 Point m Tables Keypad Keyboard Shortcuts 332.12 Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes. To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a = 0.025 that the delivery times vary more than the owner desires? Step 2 of 5: Calculate the p-value for an upper one-sided alternative hypothesis tright-tailed test). The alternative hypothesis for this problem is Hyo> 25 mins. m Tables Keypad Answer 1 Point Keyboard Shortcuts O 0.1 <pvalue <0.2 Opvalue > 0.2 O 0.01 <p-value <0.05 O 0.05 <p value <0.1 O None of the above Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes. To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a 0.025 that the delivery times vary more than the owner desires? Step 3 of 5: What is the rejection region at the 0.05 level of significance for the test on the variance for a lower-taled alternative hypothesis (left-tall test)? The alternative hypothesis for this problem is Hy:o < 25 mins. 1 Point E Tables Keypad Answer Keyboard Shortcuts O Reject Ho if the test statistic is greater than 36.414 O Reject Ho if the test statistic is less than 13.848 O Reject Ho if the test statistic is greater than 13.848 O Reject Ho if the test statistic is less than 36.414 O None of the above
Transcribed Image Text:Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes, To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a = 0.025 that the delivery times vary more than the owner desires? Step 1 of 5: Calculate the test statistic for this problem? Round your answer to two decimal places: Answer Awred 1 Point m Tables Keypad Keyboard Shortcuts 332.12 Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes. To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a = 0.025 that the delivery times vary more than the owner desires? Step 2 of 5: Calculate the p-value for an upper one-sided alternative hypothesis tright-tailed test). The alternative hypothesis for this problem is Hyo> 25 mins. m Tables Keypad Answer 1 Point Keyboard Shortcuts O 0.1 <pvalue <0.2 Opvalue > 0.2 O 0.01 <p-value <0.05 O 0.05 <p value <0.1 O None of the above Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli claims that the sandwiches will be delivered within 20 minutes from receiving the order. Given the hectic schedules of their customers, consistent delivery time is a must. The owner has decided that the standard deviation of delivery times should be at most 5 minutes. To determine how consistently the sandwiches are being delivered, the manager randomly selects 25 orders and measures the time from receiving the order to delivery of the sandwich. The average time to delivery of the sample was 21 minutes with a standard deviation of 18.60 minutes. Will the manager conclude at a 0.025 that the delivery times vary more than the owner desires? Step 3 of 5: What is the rejection region at the 0.05 level of significance for the test on the variance for a lower-taled alternative hypothesis (left-tall test)? The alternative hypothesis for this problem is Hy:o < 25 mins. 1 Point E Tables Keypad Answer Keyboard Shortcuts O Reject Ho if the test statistic is greater than 36.414 O Reject Ho if the test statistic is less than 13.848 O Reject Ho if the test statistic is greater than 13.848 O Reject Ho if the test statistic is less than 36.414 O None of the above
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