Question 135pts

Suppose we select one individual at random from the sample of Florida residents aged 50 or older summarized below. The rows represent the education level of the individuals in the sample and the columns represent whether or not the individuals ever had a sigmoidoscopy or colonoscopy (colorectal cancer screening).

Colorectal Cancer Screening
Yes	No
Less than H.S.	152	346
H.S. or G.E.D.	137	588
Some post-H.S.	110	331
College graduate	175	609

Using only the data provided above for this question, find the probability that the individualHAS had a sigmoidoscopy or colonoscopy (colorectal cancer screening)GIVEN the individual's education is classified asCollege graduate(Round to three decimal places. Note that any trailing zeros are not shown in our answer choices below.)

0.223

0.305

0.234

0.071

Flag this Question Question 145pts

Suppose we select one individual at random from the sample of Florida residents aged 50 or older summarized below. The rows represent the education level of the individuals in the sample and the columns represent whether or not the individuals ever had a sigmoidoscopy or colonoscopy (colorectal cancer screening).

Colorectal Cancer Screening
Yes	No
Less than H.S.	100	328
H.S. or G.E.D.	178	623
Some post-H.S.	81	340
College graduate	136	568

Using only the data provided above for this question, find the probability that the individualHAS NOT had a sigmoidoscopy or colonoscopy (colorectal cancer screening)GIVEN the individual's education is classified asH.S. or G.E.D.(Round to three decimal places. Note that any trailing zeros are not shown in our answer choices below.)

0.335

0.79

0.265

0.778

Flag this Question Question 1510pts Assume that in a company of 40 employees that 15 of them have a particular trait.

If you select two employees at random (without replacement) from this company, find the probability that both of them will have this trait.

0.131

0.135

0.141

0.144

Flag this Question Question 1610pts Assume the true prevalence of a particular trait among U.S. adults is 27.2%.

If you select two adults at random from the entire U.S. population, find the probability that both of them will have this trait.

0.544

0.074

0.53

0.198

Flag this Question Question 175pts Let P(A) = 0.6 and P(B) = 0.3. In order for the events A and B to be independent, P(A and B) must equal _____

0.50

0.90

0.18

0.09

Flag this Question Question 185pts Let P(A) = 0.4 and P(B) = 0.5. In order for the events A and B to be independent, P(B|A) must equal _____

0.2

0.5

0.9

0.4