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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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yandy yandy
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A year ago

In order to improve the grades of students at UTC, several incentive programs have been introduced. Results of random samples of grades from after and before the incentive programs are given below.

 

 

After Incentives

Before incentives

Sample Size

14.00

12.00

Sample Mean

2.85

2.61

Sample Standard Deviation

0.40

0.35

Sample Mode

2.50

3.00


 

a.Give the hypotheses.
b.Compute the test statistic.
c.At a 0.1 level of significance, test to determine whether the incentive programs have significantly increased the average grades.

Textbook 
Essentials of Statistics for Business and Economics

Essentials of Statistics for Business and Economics


Edition: 7th
Authors:
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sbbaltsbbalt
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A year ago
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yandy Author
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A year ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
cartoon
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This calls for a celebration Person Raising Both Hands in Celebration
taydav
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2 hours ago
this is exactly what I needed
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