About 1/4 of all adults in the United States have type O+ blood. If three randomly selected adults donate blood, find the probability of each of the following events. (Round your answers to four decimal places.)
A. Two out of the three are type O+.
About 1/4 of all adults in the United States have type O+ blood. If three randomly...
The probability that a person in the United States has type B blood is 12%. Three unrelated people in the United States are selected at random Complete parts (a) through (d). (a) Find the probability that all three have type B blood The probability that all three have type B blood is _______
It is estimated 30 % of all adults in United States invest in stocks and that 84 % of U.S. adults have investments in fixed income instruments (savings accounts, bonds, etc.). It is also estimated that 26 % of U.S. adults have investments in both stocks and fixed income instruments. (a) What is the probability that a randomly chosen U.S. adult invests in stocks, given that s/he invests in fixed income instruments? Round your answer to 2 decimal places. (b)...
The probability that a person in the United States has type B+ blood is 88%. ThreeThree unrelated people in the United States are selected at random. Complete parts (a) through (d). (a) Find the probability that all threethree have type B+ blood.
According to a recent survey, 55 out of 260 adults living in the United States have considered running for office at some point. We wish to estimate the percentage of all adults living in the U.S. that have considered running for office by constructing a 95% confidence interval. Round all answers to three decimal places What is the point estimate? What is the margin of error? Give the 95% confidence interval: <p<
46% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability that the number of U.S. adults who have very little confidence in newspapers is (a) exactly five, (b) at least six, and (c) less than four. 46% of U.S. adults have very little confidence in newspapers. You randomly select 10 U.S. adults. Find the probability that the number of U.S. adults who have very little confidence in newspapers is (a)...
Here is the probability model for the blood type of a randomly chosen person in the United States. Blood type AB 0 А Probability 0.42 0.15 0.05 0.38 What is the probability that a randomly chosen American does not have type o blood? % Round to the nearest 0.0196 Question Help: D Post to forum Submit Question
Based on a poll, 50% of adults believe in reincarnation Assume that 6 adults are randomly selected and find the indicated probability. Complete parts (a) through (d) below a. What is the probability that exactly 5 of the selected adults believe in reincarnation? The probability that exactly 5 of the 6 adults believe in reincarnation is (Round to three decimal places as needed.) b. What is the probability that all of the selected adults believe in reincarnation? The probability that...
68% of U.S. adults oppose hydraulic fracturing (fracking) as a means of increasing the production of natural gas and oil in the United States. You randomly select five U.S. adults. Find the probability that the number of U.S. adults who oppose fracking as a means of increasing the production of natural gas and oil in the United States is (a) exactly two, (b) less than four, and (c) at least three.
About 6% of employed adults in the United States held multiple jobs. A random sample of 69 employed adults is chosen. Use th TI-84 Plus calculator as needed. Part 1 of 5 (a) Is it appropriate to use the normal approximation to find the probability that less than 6.6% of the individuals in the sample hold multiple jobs? If so, find the probability. If not, explain why not. It is appropriate to use the normal curve, since np - 4.14...
According to the American Red Cross, out of every 100 people in the United States, blood types and Rh factors occur at the rates shown in the table. Blood Type, (a) a) Of all people in the United States who have type B blood, what percent are Rh positive? (Round the answer to one decimal place.) (b) Of all people in the United States who have type B blood, what percent are Rh negative? (Round the answer to one decimal...