Question

can you guys PLEASE help me!!! i only have 40 min!! THANK YOU

QUESTION 1

1. Consider the hospital emergency room data from the table. Let A denote the event that a visit is to hospital 1 and let B denote the event that a patient is admitted to hospital 1. Determine  P (B | A)?

   Hospital	1	2	3	4	Total
   Total	5250	6877	5658	4301	22086
   LWBS	187	255	249	246	937
   Admitted	1239	1513	682	940	4374
   Not admitted	3824	5109	4727	3115	16775

   		1.4948
   		0.9803
   		0.2360
   		None of the preceding
   		0.7643
   		1

QUESTION 2

1. Suppose that P (A|B) = 0.2, P(A|B') = 0.3, and P(B) = 0.8. What is P(A)?

   		0.68
   		0.36
   		0.12
   		None of the preceding
   		0.48
   		0.22

QUESTION 3

1. Suppose that P (A|B) = 0.4 and P(B) =0.5. Determine P(A⋂B) and P(A'⋂B)?

   		None of the preceding
   		P(A⋂B) = 0.6 and P(A'⋂B = 0.2
   		P(A⋂B) = 0.3 and P(A'⋂B = 0.6
   		P(A⋂B) = 0.3 and P(A'⋂B) = 0.2
   		P(A⋂B) = 0.4 and P(A'⋂B = 0.1
   		P(A⋂B) = 0.2 and P(A'⋂B = 0.3

QUESTION 4

1. Suppose that P (A | B) = 0.7, P(A) = 0.5, and P(B) = 0.2. Determine P (B | A)?

   		0.53
   		0.87
   		0.28
   		None of the preceding
   		0.14
   		0.36

QUESTION 5

1. Suppose that you buy 10 lottery tickets, and each ticket wins with a probability p = 0.1.

   What is the probability you will have two winners (i.e., P (X = 2))?

   		0.2213
   		0.3491
   		0.5208
   		0.4319
   		None of the preceding
   		0.1937

QUESTION 6

1. Let X be the number of typos on a page of an engineering statistics technical report with a mean of 3 typos per page. (A) What is the probability that a randomly selected page of the report has at least one typo on it? (B) What is the probability that a randomly selected page of the report has at most one typo on it?

   		(A) 0.1502 and (B) 0.0102
   		(A) 0.2505 and (B) 0.0992
   		(A) 0.5502 and (B) 0.3912
   		None of the preceding
   		(A) 0.1992 and (B) 0.9502
   		(A) 0.9502 and (B) 0.1992

QUESTION 7

1. Products produced by a machine has a 7% defective rate. What is the probability that the first defective occurs in the fifth item inspected?

   		0.01513
   		None of the preceding
   		0.03615
   		0.05236
   		0.04665
   		0.06655

Answer 1