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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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kirstykirst kirstykirst
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Lyon, Inc. manufactures Flash drives on two different manufacturing processes. Because the management of this company is interested in determining if process 1 takes less manufacturing time, they selected independent samples from each process. The results of the samples are shown below.

 

 

Process 1

Process 2

Sample Size

27

22

Sample Mean (in minutes)

10

14

Sample Variance

16

25


 

a.State the null and alternative hypotheses.
b.Determine the degrees of freedom for the t test.
c.Compute the test statistic
d.At 95% confidence, test to determine if there is sufficient evidence to indicate that process 1 takes a significantly shorter time to manufacture the Flash drives.

Textbook 
Essentials of Statistics for Business and Economics

Essentials of Statistics for Business and Economics


Edition: 7th
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stanka82stanka82
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More solutions for this book are available here


a.H0: μ1 - μ2≥ 0
Ha: μ1 - μ2< 0
b.39
c.-3.042
d.p-value (0.0021) is less than 0.005, thus, reject H0 and conclude process 1 takes shorter time.
1

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