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Textile manufacturer, Joywill International, is trying to decide which vendor they should source for a yarn...

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Question

Statistics

Textile manufacturer, Joywill International, is trying to decidewhich vendor they should source for a yarn needed in one of theirproducts. Vendor A has a lower price than Vendor B but thedetermining factor must be the mean breaking strength of theyarn.

Random samples were drawn from the vendors’ supply, with resultsshown below:

Vendor A

Vendor B

Sample size

10

12

Sample mean

105

98

Sample variance

8

9

Do these data provide sufficient evidence that the mean yarnstrength for Vendor A is the more than the mean yarn strength forVendor B.

Perform the appropriate hypothesis test using a significancelevel of 0.05.

Do your work in an Excel file. Make Excel do the teststatistic calculation.!!!!!!

Answer & Explanation Solved by verified expert
4.3 Ratings (678 Votes)
using excel we have PooledVariance t Test for the Difference Between Two Means assumes equal population variances Data Hypothesized Difference 0 Level of Significance 005 Vendor A Sample Size    See Answer
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