Question
The histogram to the right represents the weights(in pounds) of members of a certainhigh-school math team. What is the classwidth? What are the approximate lower
The histogram to the right represents the weights(in pounds) of members of a certainhigh-school math
team. What is the classwidth? What are the approximate lower and upper-class limits of the firstclass?
The blood platelet counts of a group of women have abell-shaped distribution with a mean of
258.7 and a standard deviation of 61.4. (All units are 1000 cells/L.)
Using the empiricalrule, find each approximate percentage below.
- What is the approximate percentage of women with platelet counts within 1 standard deviation of the mean, or between 197.3 and 320.1?
- What is the approximate percentage of women with platelet counts between 135.9 and 381.5?
Approximately______% of women in this group have platelet counts within 1 standard deviation of the mean, or between 197.3 and 320.1.
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Statistical Techniques in Business and Economics
Authors: Douglas A. Lind, William G Marchal
17th edition
1259666360, 978-1259666360
