Question: course hero data are drawn from a bell-shaped distribution with a mean of 90 and a standard deviation of 5 a. Approximately what pecentage of

course hero data are drawn from a bell-shaped distribution with a mean of 90 and a standard deviation of 5

a. Approximately what pecentage of the observations fall between 80 and 100?

b. Approximately what percantage of the observations fall between 75 and 105?

c. Approximately what percentage of the observations are less then 85?

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