I want the solution of this question asap 4:54 PM a moreheadstate-bb9.blackboard

Question

I want the solution of this question asap

4:54 PM a moreheadstate-bb9.blackboard.com ..ooo AT&T; 1. A student decided to conduct a research about the Mean ACT of the MSU student. He sent a survey to 36 students and aske from their ACT scores. After collecting the data, he found out the mean of this sample was equal to 22. With a standard deviation of What can he conclude with 99% certainty about the value of the mean for the ACT scores of ALL freshman students? As you know, this mean you need to construct a 90% Confidence Interval regarding the value of the population mean.

Explanation / Answer

We will Construct the 90% Interval of the ACT Scores

Here Critical value at 90% Interval is 1.645

Margin of error = (1.645*9)/Sqrt(36) = 2.4673

90% Interval

(22-2.4673, 22+2.4673)

= (19.5327, 24.4673)

So, We can say with 90% Confident that mean ACT Scores will lies in this interval

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