Tt
30. A hospital has a critical shortage of O negative blood. A recent survey of 13,700 donors in the United States
found that only 822 have this type of blood. The hospital sends out a mobile blood donation unit that can
serve about 50 donors per day, with each giving about one
liter of blood. The hospital's goal is to collect
10 liters of O negative blood in 5 days.
You simulate the number of donors with blood type O negative out of 50 donors by repeatedly drawing
200 random samples of size 50. The histogram shows the results.
0.25+
Simulation of 50 Blood Donors
Relative frequency
0.2-
0.15
0.1-
0.05
0
Proportion of 50 donors with O negative blood
Which of the following statements are true?
It is likely that the hospital will reach its goal.
b.
The sample is the 822 donors who have O negative blood.
The statistic is the 6% of donors with O negative blood
.
d. The population is all people in the United States.
e.
The parameter is the 13,700 donors in the United States who were surveyed.
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