(a)
To explain the meaning of z score equal to -1.45 in regards of bone density of 25 year old women.
(a)
Explanation of Solution
The z score tells us how far the particular value is from the mean in terms of standard deviation. Negative sign means that the value is less than mean and positive sign means that value is more than mean.
Here, the z score equal to -1.45 means that the her bone density is 1.45 standard deviations less than the mean (956).
(b)
To calculate the value of standard deviation.
(b)
Explanation of Solution
Given:
Formula used:
Calculation:
Chapter 3 Solutions
Statistics Through Applications
Additional Math Textbook Solutions
Intro Stats, Books a la Carte Edition (5th Edition)
Introductory Statistics
An Introduction to Mathematical Statistics and Its Applications (6th Edition)
Introductory Statistics (10th Edition)
Elementary Statistics: Picturing the World (7th Edition)
Statistical Reasoning for Everyday Life (5th Edition)
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