A frequency distribution has a mean of 100 and a standard deviation of 20. The class limits for one class are 50 up to 60. What are the standard normal z-statistics for the class limits? Select one: a. -20 and 20 b. -2.5 and -2.0 c. 2.0 and 2.5 d. -50 and -40
A frequency distribution has a mean of 100 and a standard deviation of 20. The class limits for one class are 50 up to 60. What are the standard normal z-statistics for the class limits? Select one: a. -20 and 20 b. -2.5 and -2.0 c. 2.0 and 2.5 d. -50 and -40
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 14PPS
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Question
A frequency distribution has a mean of 100 and a standard deviation of 20. The class limits for one class are 50 up to 60. What are the standard normal z-statistics for the class limits?
Select one:
a. -20 and 20
b. -2.5 and -2.0
c. 2.0 and 2.5
d. -50 and -40
Expert Solution
Step 1
From the provided information,
Mean (µ) = 100
Standard deviation (σ) = 20
The class limits for one class are 50 up to 60.
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