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Author Question: A manager asked her employees how many times they had given blood in the last year. The results of ... (Read 58 times)

melly21297

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on: Jul 25, 2018
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


jointhecircus

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Reply #1 on: Jul 25, 2018
Answer to Question 1

C

Answer to Question 2

B


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