Mathematics, 23.10.2019 09:50, macybarham

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%
2.2%
47.7%
50%
52.2%

Answers: 3

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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% 2.2% 47.7% 50% 52.2%

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Questions in other subjects:

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%
2.2%
47.7%
50%
52.2%