435,918 views
38 votes
38 votes
The final exam scores in a statistics class were normally distributed with a mean of

70 and a standard deviation of five. What is the probability that a student scored
more than 65% and less than 75% on the exam?

User Vasyl Demin
by
2.6k points

1 Answer

11 votes
11 votes

Answer:

68.27%

Explanation:

By the Empirical Rule, as 65% and 75% are both one standard deviation apart from the mean of 70%, then this represents 68.27% of the data.

User Magnus Nordmo
by
3.3k points
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