Question: A computer program has produced the following output for a hypothesis testing problem: Difference in sample means: 2.35 Standard error of the difference in sample

A computer program has produced the following output for a hypothesis testing problem:

Difference in sample means: 2.35 Standard error of the difference in sample means: ?

Test statistic: z0  2.01 P-value: 0.0222

(a) What is the missing value for the standard error?

(b) Is this a two-sided or a one-sided test?

(c) If   0.05, what are your conclusions?

(d) Find a 90% two-sided CI on the difference in means.

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