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1. The mean time costumer waits in line before checking in a grocery chair is less than 10 minutes. To verify the performance of the store, the obtaining mean time of 25 costumers is 9.5 minutes with standard deviation of 1.6 minute. Use these data to test the null hypothesis that the mean time is 10 minutes, at 0.01 level of significance. 2. A fast food restaurant cashier claimed that the average amount spent by the customers for dinner is P125.00. Over a month period, a sample of 50 customers was selected and it was found that the average amount spen for dinner was P130.00. Using 0.05 level of significance, can it be concluded that the average amount spent by customers is more than 8105 003 A ni 17.00

1. The mean time costumer waits in line before checking in a grocery chair is less than 10 minutes. To verify the performance of the store, the obtaining mean time of 25 costumers is 9.5 minutes with standard deviation of 1.6 minute. Use these data to test the null hypothesis that the mean time is 10 minutes, at 0.01 level of significance. 2. A fast food restaurant cashier claimed that the average amount spent by the customers for dinner is P125.00. Over a month period, a sample of 50 customers was selected and it was found that the average amount spen for dinner was P130.00. Using 0.05 level of significance, can it be concluded that the average amount spent by customers is more than 8105 003 A ni 17.00

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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What is the proper critical value for each given? Find the rejection region and sketch the curve.
1. The mean time costumer waits in line before checking in a grocery chair is less than 10 minutes. To verify the performance of the store, the obtaining mean time of 25 costumers is 9.5 minutes with standard deviation of 1.6 minute. Use these data to test the null hypothesis that the mean time is 10 minutes, at 0.01 level of significance. 2. A fast food restaurant cashier claimed that the average amount spent by the customers for dinner is P125.00. Over a month period, a sample of 50 customers was selected and it was found that the average amount spen for dinner was P130.00. Using 0.05 level of significance, can it be concluded that the average amount spent by customers is more thar P125.00? Assume that the population standard deviation is P7.00.
Transcribed Image Text:1. The mean time costumer waits in line before checking in a grocery chair is less than 10 minutes. To verify the performance of the store, the obtaining mean time of 25 costumers is 9.5 minutes with standard deviation of 1.6 minute. Use these data to test the null hypothesis that the mean time is 10 minutes, at 0.01 level of significance. 2. A fast food restaurant cashier claimed that the average amount spent by the customers for dinner is P125.00. Over a month period, a sample of 50 customers was selected and it was found that the average amount spen for dinner was P130.00. Using 0.05 level of significance, can it be concluded that the average amount spent by customers is more thar P125.00? Assume that the population standard deviation is P7.00.
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