L TRE pI8t provides very strong evidence that the data comes from a Normal distr

Question

L TRE pI8t provides very strong evidence that the data comes from a Normal distribution. The plot tells us that we should expect the sample mean and median to be very close D. Theoretical Quartles suppose that P(A) = 0.30, p(B) = 0.40, A. No, because P(A n B) 0. B. No, because P(A) x P(B) P(An B). C. Yes, because P (A B) 0 D. Yes, because P(A) x P(B) = P(An B). 3, P(A u B) = 0.58. Are A and B mutually exclusive? 4. Suppose that P (A)-0.30, P (B) 0.40, P (A u B) 0.58. What is P(A, n B)? A. 0.18 B. 0.12 C. 0.28 D. 0.42 For Problems 5 and 6: The probability mass function of a discrete random variable X is given below. 5. What is P(O

Explanation / Answer

Answer:

3).

A. No, because P( A and B) 0

P( A and B) = P(A) +P( B) – P( A or B) = 0.30+0.40-0.58= 0.12

4).

P( A and B) = P(A) +P( B) – P( A or B) = 0.30+0.40-0.58=0.12

P(B) = P(A’ and B) + P( A and B)

P(A’ and B) = P( B) - P( A and B)   = 0.40-0.12

=0.28

5).

P(0 < x2.5)

=0.37+0.16

=0.53

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