2. the army wants to describe the distribution of head sizes of its soldiers in order to plan
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Mathematics, 22.11.2019 17:31, kibyrd14
2. the army wants to describe the distribution of head sizes of its soldiers in order to plan
orders of helmets. here are the head sizes in inches of 30 male soldiers, which were obtained
by putting a tape measure around each soldier's forehead.
23.0 22.2 21.7 220 22: 3 226
22.7 21.5 22.7 24.9 20.8. 23.3
24.2 23.5 23.9 23.4 20.8 21.5
23.0 24.0 22.7 22.6 23.9 21.8
23.1 21.9 21.0 22.4 23.5 22.5
a. give a graphical description of these data. is there any aspect of the distribution that would
discourage the use of x and s to measure center and spread?
b. find x and s for these data. be sure to include the units in which these numbers
are measured
c. what percentage of the data is within one standard deviation of the mean?
Answers: 2
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