Mathematics, 12.01.2020 23:31 austintules2005
The grades on the last history exam had a mean of 80%. assume the population of grades on history exams is known to be distributed normally, with a standard deviation of 5%. approximately what percent of students earn a score between 70% and 80%?
a. 2.2%
b. 10%
c. 47.7%
d. 50%
e. 52.5%
Answers: 1
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The grades on the last history exam had a mean of 80%. assume the population of grades on history ex...
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