Basic Business Statistics, Student Value Edition
14th Edition
ISBN: 9780134685113
Author: Mark L. Berenson, David M. Levine, David F. Stephan, Kathryn Szabat
Publisher: PEARSON
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Chapter 12, Problem 21PS
a.
To determine
Determine the upper critical value of the test statistic with 4 rows and 5 columns with
b.
To determine
Determine the upper critical value of the test statistic with 4 rows and 5 columns at
c.
To determine
Determine the upper critical value of the test statistic with 4 rows and 6 columns at
d.
To determine
Determine the upper critical value of the test statistic with 3 rows and 6 columns at
e.
To determine
Determine the upper critical value of the test statistic with 6 rows and 3 columns at
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Chapter 12 Solutions
Basic Business Statistics, Student Value Edition
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- Suppose a researcher is interested inthe effectiveness in a new childhood exercise program implemented in a SRS of schools across a particular county. In order to test the hypothesis that the new program decreases BMI (Kg/m2), the researcher takes a SRS of children from schools where the program is employed and a SRS from schools that do not employ the program and compares the results. Assume the following table represents the SRSs of students and their BMIs. Student intervention group BMI (kg/m2) Student control group BMI (kg/m2) A 18.6 A 21.6 B 18.2 B 18.9 C 19.5 C 19.4 D 18.9 D 22.6 E 24.1 F 23.6 A) Assuming that all the necessary conditions are met (normality, independence, etc.) carry out the appropriate statistical test to determine if the new exercise program is effective. Use an alpha level of 0.05. Do not assume equal variances.B) Construct a 95% confidence interval about your estimate for the average difference in BMI between the groups.arrow_forwardWhat is the t critical value for a two-tailed test, with α = 0.05 and n = 10arrow_forwardYou are using a z-test to test H0: u=413 vs Ha: u<413 at the a=.1 level. What would the rejection region be for this test?arrow_forward
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