W

WW

Here is the distribution of blood types for randomly

chosen black Americans:

o

А

в

AB

ele mai bun

AB. C

Blood

Type:

Probability:

0.49

.

0.20

0.04

Joe can safely receive blood transformations from

people with blood types O and B. What is the

probability that a randomly chosen black American

can donate blood to Joe?

Sole with work in 10 years, the average number of hours of tv watched per week by teenagers dropped from 23.9 to 21.4. find the percent of change.

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

Rewrite so the subject can be y in the formula d=m-y/y+n