A manager asked her employees how many times they had given blood in the last year. The results of the survey are given below.
The random variable x represents the number of times a person gave blood and P(x) represents the probability of selecting an employee who had given blood that percent of the time. What is the mean number of times a person gave blood based on this survey?
x 0 1 2 3 4 5 6
P(x) 0.30 0.25 0.20 0.12 0.07 0.04 0.02
A) 3.0 B) 2.0 C) 1.6 D) 0.14
Question 2
A researcher randomly selected 100 adults aged 18-25 and 100 adults aged 50-60. Within each age group, she recorded the number of smokers.
A) qualitative, dependent B) qualitative, independent
C) quantitative, independent D) quantitative, dependent
red blood cells
Baseline Pulse, Respiration, and Blood Pressure Values from Birth to Adolescence
Red blood cells with normal hemoglobin, like the three similar ones, are smooth and round
Blood pressure cuffs are available in various types and sizes for infants and children
Chemistry for Changing Times
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