statistics grades: In a statistics class of 35 students, there were 17 men and 18 women....
statistics grades: In a statistics class of 35 students, there were 17 men and 18 women. Six of the men and seven of the women received an A in the course. A student is chosen at random from the class. (a) Find the probability that the student is a woman. (b) Find the probability that the student received an A. (c) Find the probability that the student is a woman or received an A. (d) Find the probability that the student did not receive an A.
Homework Answers
| Men | Women | Total | |
| Receive A | 6 | 7 | 13 |
| Not receive A | 11 | 11 | 22 |
| Total | 17 | 18 | 35 |
a)
P(Women) = 18/35
= 0.5143
b)
P(A) = 13/35
= 0.3714
c)
P(Women OR A) = P(Women ) + P(A) - P(Women and A )
= 18/35 + 13/35 - 7/35
= 24/35
= 0.6857
d)
P(not A) =22/35
= 0.6286
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