Mathematics, 06.07.2019 03:20 jcbballer
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 79 minutes and a standard deviation of 8 minutes. answer the following questions.
what is the probability of completing the exam in one hour or less (to 4 decimals)?
what is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes (to 4 decimals)?
assume that the class has 60 students and that the examination period is 90 minutes in length. how many students do you expect will be unable to complete the exam in the allotted time (to the nearest whole number)?
Answers: 1
Mathematics, 21.06.2019 13:00, innocentman69
You are constructing a histogram for scores that range from 70 to 100 in whole points. frequencies range from 3 to 10; that is, every whole-point score between 60 and 100 occurs at least 3 times, and at least one score occurs 10 times. which of these would probably be the best range and size for the score intervals along the x-axis?
Answers: 1
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