Concept explainers
(a)
To Calculate: the percent of babies will be identified as low birth weight.
(a)
Answer to Problem 3.51RE
1.10%
Explanation of Solution
Given:
Formula used:
Calculation:
Raw containing the correct integer 10th of z score (-2.2) and the column containing the corresponding 100th of z score (0.09)
0.0110=1.10%
Therefore 1.10% of the babies have a low birth weight.
(b)
To Calculate: the
(b)
Answer to Problem 3.51RE
First quartile is about 3326 grams and third quartile is about 4010 grams
Explanation of Solution
Given:
Formula used:
Calculation:
Probability of a baby weighing less than 25% =0.25 and 75% = 0.75 of all babies, while there is a mean of 3688 grams and standard deviation of 511 grams
Z-score corresponding 0.75 is z=0.67
Z-score corresponding 0.25 is z=-0.67
Therefore the first quartile is about 3326 grams and third quartile is about 4010 grams
Chapter 3 Solutions
Statistics Through Applications
Additional Math Textbook Solutions
Fundamentals of Statistics (5th Edition)
Introductory Statistics
Intro Stats, Books a la Carte Edition (5th Edition)
Statistical Reasoning for Everyday Life (5th Edition)
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