Solved

On a Recent English Exam,if 20% of Scores Fell Below

Question 10

Multiple Choice

On a recent English exam,if 20% of scores fell below 60 points and the standard deviation is 7.5,find the mean score (assuming the Normal model is appropriate) .


A) 12
B) 1.50
C) 67.5
D) -53.70
E) 66.30

Correct Answer:

verifed

Verified

Unlock this answer now
Get Access to more Verified Answers free of charge

Related Questions

Q5: 0.7 < z < 1.98<br>A)-21.81%<br>B)21.75%<br>C)23.45%<br>D)173.41%<br>E)21.81%

Q6: What should a Normal Probability plot look

Q7: the highest 7%<br>A)-1.48<br>B)1.45<br>C)1.48<br>D)1.26<br>E)1.39

Q8: Suppose that the average amount of sugar

Q9: The weights of children age two average

Q11: Based on the Normal model for car

Q12: A town's average snowfall is 40 cm

Q13: Here are the summary statistics for

Q14: The mean test score on a statistics

Q15: Assuming a Normal model applies,a town's