The waiting time to check out of a supermarket has had a population mean of 8.89 minutes. Recently, in an effort to reduce the waiting time, the supermarket has experimented with a system in which there is a single waiting line with multiple checkout servers. A sample of 60 customers was selected, and their mean waiting time to check out was 7.83 minutes with a sample standard deviation of 4.8 minutes. Complete parts (a) through (d). Click here to view page 1 of the critical values for the t Distribution. Click here to view page 2 of the critical values for the t Distribution. a. At the 0.10 level of significance, using the critical value approach to hypothesis testing, is there evidence that the population mean waiting time to check out is less than 8.89 minutes? What are the null and alternative hypotheses for this test? OA. Ho: 57.83 H₁: >7.83 OD. Ho: 27.83 H₁: <7.83 What is the test statistic for this test? -1.7106 (Round to four decimal places as needed.) What is the critical value for this test? -1.2961 (Round to four decimal places as needed.) What is the conclusion for this test? Since the test statistic is than the critical value, Ho. There is OB. Ho: 58.89 H₁: >8.89 OE. H>8.89 H₁: us8.89 MC. Ho: 128.89 H₁: <8.89 OF. Ho: H<7.83 Η μ27.83 evidence to conclude that the population mean waiting time to check out is less than 8.89 minutes.
The waiting time to check out of a supermarket has had a population mean of 8.89 minutes. Recently, in an effort to reduce the waiting time, the supermarket has experimented with a system in which there is a single waiting line with multiple checkout servers. A sample of 60 customers was selected, and their mean waiting time to check out was 7.83 minutes with a sample standard deviation of 4.8 minutes. Complete parts (a) through (d). Click here to view page 1 of the critical values for the t Distribution. Click here to view page 2 of the critical values for the t Distribution. a. At the 0.10 level of significance, using the critical value approach to hypothesis testing, is there evidence that the population mean waiting time to check out is less than 8.89 minutes? What are the null and alternative hypotheses for this test? OA. Ho: 57.83 H₁: >7.83 OD. Ho: 27.83 H₁: <7.83 What is the test statistic for this test? -1.7106 (Round to four decimal places as needed.) What is the critical value for this test? -1.2961 (Round to four decimal places as needed.) What is the conclusion for this test? Since the test statistic is than the critical value, Ho. There is OB. Ho: 58.89 H₁: >8.89 OE. H>8.89 H₁: us8.89 MC. Ho: 128.89 H₁: <8.89 OF. Ho: H<7.83 Η μ27.83 evidence to conclude that the population mean waiting time to check out is less than 8.89 minutes.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The waiting time to check out of a supermarket has had a population mean of 8.89 minutes. Recently, in an effort to reduce the waiting time, the supermarket has experimented with a system in which there is a single waiting line with multiple checkout servers. A sample of 60
customers was selected, and their mean waiting time to check out was 7.83 minutes with a sample standard deviation of 4.8 minutes. Complete parts (a) through (d).
Click here to view page 1 of the critical values for the t Distribution.
Click here to view page 2 of the critical values for the t Distribution.
a. At the 0.10 level of significance, using the critical value approach to hypothesis testing, is there evidence that the population mean waiting time to check out is less than 8.89 minutes?
What are the null and alternative hypotheses for this test?
OA. Ho: μ≤7.83
H₁:μ> 7.83
O D. Ho: μ27.83
H₁: μ<7.83
What is the test statistic for this test?
-1.7106 (Round to four decimal places as needed.)
What is the critical value for this test?
- 1.2961 (Round to four decimal places as needed.)
What is the conclusion for this test?
Since the test statistic is
than the critical value,
Ho. There is
O B. Ho: μ≤8.89
H,:μ > 8.89
C
O E. Ho: μ>8.89
H,:μ 58.89
C. Ho: μ ≥8.89
Η: μ <8.89
OF. Ho: μ<7.83
H₁:μ ≥7.83
evidence to conclude that the population mean waiting time to check out is less than 8.89 minutes.
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