Question

Shortly after being put into service, some buses manufactured by a certain company have developed cracks...

Shortly after being put into service, some buses manufactured by a certain company have developed cracks on the underside of the main frame. Suppose a particular city has 25 of these buses, and that cracks have actually appeared in 10 of the buses.  If we take a simple random sample of 8 buses from the 25 buses, what is the probability that exactly 4 of them will have visible cracks?

Select one:

a. 0.1538

b. 0.3087

c. 0.0002

d. 0.2650

e. 0.0166

Math   Statistics-And-Probability   
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