Question: The following samples are observations taken from the same elements at two different times: a. Assume that the populations are normally distributed and construct a

The following samples are observations taken from the same elements at two different times:

a. Assume that the populations are normally distributed and construct a 90% confidence interval for the difference in the means of the distribution at the times in which the samples were taken.
b. Perform a test of hypothesis to determine if the difference in the means of the distribution at the first time period is 10 units larger than at the second time period. Use a level of significance equal to 0.10.

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a The standard deviation for thepaired differences is computed using Equation 1013 35376 ... View full answer

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