The determined final scores of the course are normally distributed with a mean of 82 and a standard deviation of 8. Based on this information, what is the probability that the mean score within this sample of 64 students in Summer C is at least 80? (a) 0.9772 (b) 0.0228
The determined final scores of the course are normally distributed with a mean of 82 and a standard deviation of 8. Based on this information, what is the probability that the mean score within this sample of 64 students in Summer C is at least 80? (a) 0.9772 (b) 0.0228
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
Related questions
Question
The determined final scores of the course are
(a) 0.9772
(b) 0.0228
(c) 0.0987
(d) 0.7885
(e) None of the above
Expert Solution
Step 1: Write the given information:
From the given information, the determined final scores of the course are normally distributed with a mean of 82 and a standard deviation of 8.
Let X be the final score of the course following normal distribution with mean 82 and standard deviation 8.
Sample size, n = 64.
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