Question:uestion 1
1. A set of final examination grades in an introductory
statistics course is normally...
Question
uestion 1
1. A set of final examination grades in an introductory
statistics course is normally...
uestion 1
1. 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 of getting a grade of 91or less on
this exam?
b) what is the probability that a student scored between 65
and 89?
c) The probability is 5% that a student taking the test scores
higher than than what grade?
d) If the professor grades on a curve ( gives A’s to the top
10% of the class regardless of the score), are you better off with
a grade of 81 on this exam or a grade of 68 on a different exam
where the mean is 62 and the standard deviation is 3? Show your
answer statistically [that is do the calculation] and explain