Use the Following to Answer Questions

question 28

Short Answer

Use the following to answer questions :
A sample of 16 from a population produced a mean of 86.9 and a standard deviation of 14.3.A sample of 18 from another population produced a mean of 75.4 and a standard deviation of 15.9.Assume that the two populations are normally distributed and the standard deviations of the two populations are equal.
The null hypothesis is that the two population means are equal,while the alternative hypothesis is that the mean of the first population is greater than the mean of the second population.The significance level is 1%.
-Derive the corresponding 99% confidence interval for the difference between the means of these two populations,rounded to three decimal places.

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Definitions:

Apologizing

Apologizing involves expressing regret or remorse for an action or statement that has caused harm or offense to another person, often with the intent to reconcile.

Business Messages

Communication conveyed through various formats, such as emails, letters, reports, or memos, intended for business purposes.

Indirect Approach

A strategy that employs subtlety and nuance in communication or action, avoiding direct confrontation or assertion.

Negative Messages

Communications that convey unfavorable or disappointing information.