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With individual lines at its various windows, a post office claimed that the variance for waiting times for customers on Friday afternoon is 3.2 minutes. On a Friday afternoon, the post office at Bukit Baru tested the main waiting line for a random sample of 10 customers, the waiting times (in minutes) as shown below: 10 9.50 9.40 9.30 9.25 9.35 9.2 10.1 10.05 9.55 Is this a sufficient claim to conclude that the waiting time at post office of Bukit Baru is superior to 3.5 minutes? Use a 0.05 level of significance. Write your decision.

With individual lines at its various windows, a post office claimed that the variance for waiting times for customers on Friday afternoon is 3.2 minutes. On a Friday afternoon, the post office at Bukit Baru tested the main waiting line for a random sample of 10 customers, the waiting times (in minutes) as shown below: 10 9.50 9.40 9.30 9.25 9.35 9.2 10.1 10.05 9.55 Is this a sufficient claim to conclude that the waiting time at post office of Bukit Baru is superior to 3.5 minutes? Use a 0.05 level of significance. Write your decision.

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
Section10.3: Measures Of Spread
Problem 1GP
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With individual lines at its various windows, a post office claimed that the variance for waiting times for customers on Friday afternoon is 3.2 minutes. On a Friday afternoon, the post office at Bukit Baru tested the main waiting line for a random sample of 10 customers, the waiting times (in minutes) as shown below: 10 9.50 9.40 9.30 9.25 9.35 9.2 10.1 10.05 9.55 Is this a sufficient claim to conclude that the waiting time at post office of Bukit Baru is superior to 3.5 minutes? Use a 0.05 level of significance. Write your decision.
Transcribed Image Text:With individual lines at its various windows, a post office claimed that the variance for waiting times for customers on Friday afternoon is 3.2 minutes. On a Friday afternoon, the post office at Bukit Baru tested the main waiting line for a random sample of 10 customers, the waiting times (in minutes) as shown below: 10 9.50 9.40 9.30 9.25 9.35 9.2 10.1 10.05 9.55 Is this a sufficient claim to conclude that the waiting time at post office of Bukit Baru is superior to 3.5 minutes? Use a 0.05 level of significance. Write your decision.
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