Answered step by step
Verified Expert Solution
Question
1 Approved Answer
1. A set of final examination grades in a course is normally distributed with a population mean of 75 and a population standard deviation of
1. A set of final examination grades in a course is normally distributed with a population mean of 75 and a population standard deviation of 10. What is probability of getting a grade of 90 or more on this exam? (4 points)
(A) 0.9332
(B) 0.0668
(C) 0.0917
(D) 0.9083
2. 20% of the students taking the test scores higher than what grade? (4 points)
(A) 79
(B) 83
(C) 89
(D) 92
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started