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Use the following to answer questions :
A sample of 20 from a population produced a mean of 66.0 and a standard deviation of 10.0.A sample of 25 from another population produced a mean of 58.6 and a standard deviation of 13.0.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 two population means are different.The significance level is 5%.
-What is the standard deviation of the sampling distribution of the difference between the means of these two samples,rounded to three decimal places?
Integrity
The quality of being honest and having strong moral principles, or the state of being whole and undivided.
Transcript
A copy made directly from an original record, especially an official copy of a student’s educational record.
Educational Record
Documents and materials which contain information directly related to a student and are maintained by an education agency or institution.
Collaboration
The act of working together with others to accomplish a task or achieve a goal, often involving sharing knowledge, learning, and building consensus among team members.
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