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In: Statistics and Probability

A manufacturer of furniture claims that the company's new model of bookshelves is easier to assemble...

A manufacturer of furniture claims that the company's new model of bookshelves is easier to assemble than the old model. To test the claim, 7 people were assigned to assemble bookshelves from each of the two models. Here are the times (in minutes) they needed to assemble the bookshelves.

Person

1 2 3 4 5 6 7

Old model 17 22 20 14 15 21 24

New model 15 19 18 13 15 19 23

a) Construct a 95% confidence interval for the differences.

b) Test if the mean assembly time for the new model is shorter than that of the old model using alpha = 0.05.

c) Now consider the data as two independent samples and conduct the test as a two sample test. Assume equal variances. Is the decision reversed?

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please like me my solution sir/madam

orchestra answered 1 year ago
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