Pregunta 5 A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a standard deviation of 8. (A) What is the probability that a student scored below 91 on this exam? (Use 4 decimal places for your answer) Answer: The probability that a student scored below 91 is (B) What is the probability that a student scored between 65 and 89? (Use 4 decimal places for your answer) Answer : The probability that a student scored between 65 and 89 is (C) The probability is 5% that a student taking the test scores higher than what grade? (round to the nearest integer) Answer : 5% of the students scores higher than

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Answer for question A),B),C) and D) 

Pregunta 5
A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a standard
deviation of 8.
(A) What is the probability that a student scored below 91 on this exam? (Use 4 decimal places for your answer)
Answer: The probability that a student scored below 91 is
(B) What is the probability that a student scored between 65 and 89? (Use 4 decimal places for your answer)
Answer : The probability that a student scored between 65 and 89 is
(C) The probability is 5% that a student taking the test scores higher than what grade? (round to the nearest integer)
Answer : 5% of
students scores higher than
Transcribed Image Text:Pregunta 5 A set of final examination grades in an introductory statistics course is normally distributed, with a mean of 73 and a standard deviation of 8. (A) What is the probability that a student scored below 91 on this exam? (Use 4 decimal places for your answer) Answer: The probability that a student scored below 91 is (B) What is the probability that a student scored between 65 and 89? (Use 4 decimal places for your answer) Answer : The probability that a student scored between 65 and 89 is (C) The probability is 5% that a student taking the test scores higher than what grade? (round to the nearest integer) Answer : 5% of students scores higher than
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