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# Answer: Finding Bone Density Scores. In Exercises assume ISBN: 9780321836960 18

## Solution for problem 39BSC Chapter 6.2

Elementary Statistics | 12th Edition

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Problem 39BSC

Finding Bone Density Scores. In Exercises assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. In each case, draw a graph, then find the bone density test score corresponding to the given information.

If bone density scores in the bottom 2.5% and the top 2.5% are used as cutoff points for levels that are too low or too high, find the two readings that are cutoff values.

Step-by-Step Solution:

Step 1 of 1 :

Given

If bone density scores in the bottom 2.5% and the top 2.5% are used as cutoff points for levels that are too low or too high,

2.5% = 2.5/100 = 0.025

Then we have to find the two readings that are cut off values.

Look in the table A-2 for the value 0.025 (or the value closest) and the z-score in the column/row title is then the corresponding z-score.

z = So...

Step 2 of 3

Step 3 of 3

##### ISBN: 9780321836960

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