Question
Medical billing errors and fraud are on the rise. According to onestudy, 4 out of 5 times, the medical bills received by patients are not
Medical billing errors and fraud are on the rise. According to onestudy, 4 out of 5 times, the medical bills received by patients are not right. Complete parts(a) through(d) below.
a. If a sample of 9 medical bills isselected, what is the probability that exactly 0 bills will containerrors?
The probability is
.
(Type an integer or decimal rounded to four decimal places asneeded.)
b. If a sample of 9 medical bills isselected, what is the probability that exactly 6 bills will containerrors?
The probability is
.
(Type an integer or decimal rounded to four decimal places asneeded.)
c. If a sample of 9 medical bills isselected, what is the probability that more than 7 bills will containerrors?
The probability is
.
(Type an integer or decimal rounded to four decimal places asneeded.)
d. What are the mean and standard deviation of the probabilitydistribution?
The mean is
and the standard deviation is
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