In the Odd 2014 period, the predicted test scores for students from one of the tertiary institutions in Jakarta are considered to be normally distributed with an average of 25 and a standard deviation of 13

Economics Nov 28, 2020

In the Odd 2014 period, the predicted test scores for students from one of the tertiary institutions in Jakarta are considered to be normally distributed with an average of 25 and a standard deviation of 13. If it is predicted that only 32.5% of prospective students will pass the Statistics course, Questions :
a. What is the lowest grade of the student?
b. Analyze your answer based on the answers you get!

Expert Solution

A) Lowest grade of the Student

P (X ≤ a) = 0.325

Q ( a-25/ 13) = Q ( 0.325) (From Standard Table)

a-25 / 13 = 0.4538

a= 25 + (-0.4538 X13)

a = 25- 5.8994

a = 19.1006

B) Passing criteria should be increased.

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