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Question
Zip, Inc. manufactures Zip 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 thet 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 Zip drives.
Answer
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