# Question: Based on the American Chemical Society there is a 0 9

Based on the American Chemical Society, there is a 0.9 probability that in the United States, a randomly selected dollar bill is tainted with traces of cocaine. Assume that eight dollar bills are randomly selected.

a. Find the probability that all of them have traces of cocaine.

b. Find the probability that exactly seven of them have traces of cocaine.

c. Find the probability that the number of dollar bills with traces of cocaine is seven or more.

d. If we randomly select eight dollar bills, is seven an unusually high number for those with traces of cocaine?

a. Find the probability that all of them have traces of cocaine.

b. Find the probability that exactly seven of them have traces of cocaine.

c. Find the probability that the number of dollar bills with traces of cocaine is seven or more.

d. If we randomly select eight dollar bills, is seven an unusually high number for those with traces of cocaine?

## Relevant Questions

Based on a Bellowes survey of adults, there is a 0.48 probability that a randomly selected adult uses a tax preparer to file taxes. Find the probability that among 20 randomly selected adults, exactly 12 use tax preparers to ...When someone buys a ticket for an airline flight, there is a 0.0995 probability that the person will not show up for the flight (based on data from an IBM research paper by Lawrence, Hong, and Cherrier). The Beechcraft 1900C ...If we sample from a small finite population without replacement, the binomial distribution should not be used because the events are not independent. If sampling is done without replacement and the outcomes belong to one of ...When Mendel conducted his famous genetics experiments with peas, one sample of offspring consisted of 580 peas, and Mendel theorized that 25% of them would be yellow peas. a. If Mendelâ€™s theory is correct, find the mean ...For the following questions, ignore leap years. a. For classes of 30 students, find the mean and standard deviation for the number born on the 4th of July. Express results using seven decimal places. b. For a class of 30 ...Post your question