Answered step by step
Verified Expert Solution
Question
1 Approved Answer
Suppose that scores on a statistics final were normally distributed with a mean of 75 points and a standard deviation of 8 points.Find the following:
Suppose that scores on a statistics final were normally distributed with a mean of 75 points and a standard deviation of 8 points.Find the following:
a.The probability that a randomly selected student form the class will score more than 80 points on the final.
b.The 40thpercentile of the scores.
c.The minimum score needed to score in the top 10%.
d.Suppose that a sample of 30 students who took the final is selected.Find the probability that their mean score is less than 70.
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