About 34 of americans have type a blood a blood drive gets

About 34% of Americans have type A+ blood. A blood drive gets 140 donors. What is the probability that at least 40 of them are A+ blood donors?

A. 0.10

B. 0.91

C. 0.07

D. 0.93

A sample of 850 people resulted in a confidence interval : 1. for a standard normal model find the z-value that is less than the mean and for which 67 of the area under the

A fair coin is tossed 500 times find the probability of : a fair coin is tossed 500 times. find the probability of obtaining more than 300 heads.a.0b.

A multiple-choice test consists of 77 questions with : a multiple-choice test consists of 77 questions with possible answers of a b c d e. estimate the probability that with

An airline company is considering a new policy of booking : an airline company is considering a new policy of booking as many as 178 persons on an airplane that can seat only 170.

About 34 of americans have type a blood a blood drive gets : about 34 of americans have type a blood. a blood drive gets 140 donors. what is the probability that at least 40 of

It is estimated that 56 of the children between the ages of : it is estimated that 56 of the children between the ages of 3 and 5 years are already enrolled in school. in a sample

A fair coin is tossed 20 times and x6 heads are observed : a fair coin is tossed 20 times and x6 heads are observed. let pphead. a test of hop.5 versus ha plt.05 is to be

In a past election the voter turnout was 51 in a survey 843 : in a past election the voter turnout was 51. in a survey 843 subjects were asked if they voted in the election. find

Sppose that x1 x2 x3 x4 and x5 is a random sample from a : suppose that x1 x2 x3 x4 and x5 is a random sample from a distribution with density function fx 1theta for 0ltxlttheta.