38
QuizMultiple Choice

Applications with Standard Normal Distribution — Cumulative exam

Question 38 • Concepts in Probability and Statistics - MA3120 B-CR

According to a recent survey of adults, approximately 62% carry cash on a regular basis. The adults were also asked if they have children. Of the 46% who have children, 85% carry cash on a regular basis. Is carrying cash independent from having children in this sample?

Answer
A
No, P(carry cash) = P(carry cash|have children).
B
No, P(carry cash) ≠ P(carry cash|have children).
C
Yes, P(carry cash) = P(carry cash|have children).
D
Yes, P(carry cash) ≠ P(carry cash|have children).
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According to a recent survey of adults…