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Mathematics, 11.02.2020 06:04 HalpMehPlz
A set of final examination grades in a calculus course wasfound to be normally distributed with a mean of 69 and a standarddeviation of 9.
a. what is the probality of getting a grade of 91or less on this exam?
b. What percentage of students scored between 65 and89?
c. What percentage of students scored between 81 and89?
d. Only 5% of the students taking the test scored higherthan what grade?
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