SOLUTION: I have no idea where to start with problem. I appreciate any guidance on this problem. The probability that a randomly selected person has type A blood is 42% Find the proba

Question 481053: I have no idea where to start with problem. I appreciate any guidance on this problem.
The probability that a randomly selected person has type A blood is 42%
Find the probability that in a sample of 10 blood donors, the number of type A donors is within one standard deviation of the expected value. Please show work.
a. 66.1%
b. 68.3%
c. 79.8%
d. 88.2%
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I have no idea where to start with problem. I appreciate any guidance on this problem.
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The probability that a randomly selected person has type A blood is 42%
Find the probability that in a sample of 10 blood donors, the number of type A donors is within one standard deviation of the expected value. Please show
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the z-score is a measure of standard deviations.
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P(-1< z < 1) = 0.6827
===============
Cheers,
Stan H.

work.
a. 66.1%
b. 68.3%
c. 79.8%
d. 88.2%

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