1.

In a study of 2000 patients with sickle-cell anemia, 95 developed myopia, which is commonly referred to as nearsightedness of whom 24 patients had corrective eye surgery. Of the entire group of 2000 patients, 93 patients had corrective eye surgery performed.

What is the probability for a patient to have eye surgery with myopia?

Group of answer choices

24/2000

24/95

24/93

93/2000

2.

In a study of 2000 patients with sickle-cell anemia, 95 developed myopia, which is commonly referred to as nearsightedness of whom 24 patients had corrective eye surgery. Of the entire group of 2000 patients, 93 patients had corrective eye surgery performed.

What is the conditional probability of myopia given corrective eye surgery was performed?

Group of answer choices

24/95

24/2000

93/2000

24/93

3.

A recent article published in the New England Journal of Medicine found that a woman with breast cancer has an 81 in 100 chance of surviving the first five years.

If two women with breast cancer are chosen at random, what is the chance that both will not survive 5 years?

Group of answer choices

0.452

0.019

0.0361

0.064

4.

A recent article published in the New England Journal of Medicine found that a woman with breast cancer has an 81 in 100 chance of surviving the first five years.

What is the probability both women will survive 5 years?

Group of answer choices

0.343

0.1182

0.723

0.656

5.

onsider the following data on a diabetes screening test based on a non-fasting blood screen test, which is relatively inexpensive and painless.

Diabetes?	Positive	Negative	Total
Yes	300	200	500
No	1800	7700	9500
Total	2350	7650	10,000

What is the overall prevalence (i.e., who has the disease) of diabetes?

Group of answer choices

500 out of 10000 or 5%

none of these

00 out of 500 or 60%

1800 out of 9500 or 18.9%