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Dell Delivery delivers sandwiches to neliehboring office buildings during lunch time in New York City. The del 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 beinu 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 ate=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
Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The dell 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 dellvery of the sample was 21 minutes with a standard deviation of 18,60 minutes. Will the manager conclude ata 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 right called test). The alternative hypothesis for this problem is H> 25 mins Answer Point im Tables Keypad Keyboard Shortcuts 01<p value < 0.2 p value> 0.2 0.01 p-value <0.05 V 0.05 p-value <0:1 None of the above
Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The deli calms 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 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-tailed alternative hypothesis left-tail test)? The alternative hypothesis for this problem is He? <25 mins Answer Point Tables ІНЕ Keypad Keyboard Shortcuts Reject Hoit the test statistic is greater than 36,414 Reject Hoif the test statistic is less than 13.848 Reject He if the test statistic is greater than 13.848 Reject Hof the test statistic is less than 36.414 None of the above
Dell Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The del 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:07 > 25 Answer Point Tables keypad Keyboard Shortcuts Reject Ho and conclude that the variance of delivery time is significantly greater than 5. Reject Ho and conclude that the standard deviation of delivery time is significantly greater than 25 Reject Ho and conclude that the variance of delivery time is significantly less than 5. Reject He and conclude that the variance of delivery time is significantly less than 25 None of the above
Deli Delivery delivers sandwiches to neighboring office buildings during lunch time in New York City. The dell 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 Answer 1 Point Tables Keypad Keyboard Shortcuts From TO Ale