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9 votes
9 votes
Scores on an English test are normally distributed with a mean of 68.7 and a standard deviation of 6.2. Find the score which seperates the bottom 64% from the top 36%.

User Balint Pato
by
2.5k points

1 Answer

12 votes
12 votes

Answer:

70.93

Explanation:

Z-score for 100-36 = 64 percentile = +.36 of a S.D. above the mean

.36 * 6.2 + 68.7 = 70.93

User Njachowski
by
3.3k points
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