question archive A set of final examination grades in an introductory statistics course is normally? distributed, with a mean of 71 and a standard deviation of 8
A set of final examination grades in an introductory statistics course is normally? distributed, with a mean of 71 and a standard deviation of 8
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A set of final examination grades in an introductory statistics course is normally? distributed, with a mean of 71 and a standard deviation of 8. Complete parts? (a) through? (d).
.a. What is the probability that a student scored below 82 on this? exam?
The probability that a student scored below 82 is
0.9162
0.9162.
?(Round to four decimal places as? needed.)
b. What is the probability that a student scored between 63 and 94??
The probability that a student scored between 63 and 94 is
0.8393
0.8393.
?(Round to four decimal places as? needed.)
c. The probability is 15?% that a student taking the test scores higher than what? grade?
The probability is 15?% that a student taking the test scores higher than
nothing
?(Round to the nearest integer as? needed.)
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