Using the information in this table, what is the probability that a randomly selected person in the United States has type B blood (either positive or negative)? Express your answer as a decimal value. Enter your answer here Blood Type, Part (b) What is the probability that a randomly selected person does not have type B blood? Express your answer as a decimal value. Enter your answer here Blood Type, Part (c) Calculate (by hand) the mean number of people with type B blood in a random sample of 250 people. (Hint: What type of probability distribution can this be classified as?)
Using the information in this table, what is the probability that a randomly selected person in the United States has type B blood (either positive or negative)? Express your answer as a decimal value. Enter your answer here Blood Type, Part (b) What is the probability that a randomly selected person does not have type B blood? Express your answer as a decimal value. Enter your answer here Blood Type, Part (c) Calculate (by hand) the mean number of people with type B blood in a random sample of 250 people. (Hint: What type of probability distribution can this be classified as?)
Chapter6: Systems Of Equations And Inequalities
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Transcribed Image Text:Blood Type
The 8 most common blood types of people in the United States, and the percentage of people
with these blood types, are shown in the table below. (Source: Stanford Blood Center, 2020)
Blood Type
Percentage
6.6%
0+
37.4%
AB-
0.6%
AB+
3.4%
B-
1.5%
B+
8.5%
A-
6.3%
A+
35.7%
Blood Type, Part (a)
Using the information in this table, what is the probability that a randomly selected person in the
United States has type B blood (either positive or negative)? Express your answer as a decimal
value.
Enter your answer here
Blood Type, Part (b)
What is the probability that a randomly selected person does not have type B blood? Express
your answer as a decimal value.
Enter your answer here
Blood Type, Part (c)
Calculate (by hand) the mean number of people with type B blood in a random sample of 250
people. (Hint: What type of probability distribution can this be classified as?)
Enter the mean below.
Enter your answer here
Blood Type, Part (d)
Calculate (by hand) the standard deviation for the number of people with type B blood in a
random sample of 250 people. Round your answer to two decimal places.
Enter your answer here
Blood Type, Part (e)
Another random sample of n = 250 people is taken and it is determined that 12 people have
type B blood. Using the range rule of thumb, is this result significant? Show your work and
explain your reasoning.
Enter your answer here
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