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texas101st78
31.03.2020 •
Mathematics
Approximately 17% of the calls to an airline reservation phone line result in a reservation being made. (a) Suppose that an operator handles 10 calls. What is the probability that none of the 10 calls result in a reservation? (Give the answer to 3 decimal places.)
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Ответ:
Probability that none of the 10 calls result in a reservation =
P(X = 0) = 0.155
Step-by-step explanation:
Given
The probability of calls to an airline reservation phone line result in a reservation being made = p =
=0.17
The probability of calls to an airline reservation phone line result in a reservation is not done = q = 1 - p = 1 - 0.17 = 0.83
Suppose that an operator handles 10 calls
n = 10
probability that none of the 10 calls result in a reservation
( Using binomial distribution)
Let X be number of calls being reserved
P(X = 0) =![\binom{n}{r}p^{r}q^{n - r}](/tpl/images/0572/4749/8de8d.png)
=![\binom{10}{0}(.17)^{0}(.83)^{10 - 0}](/tpl/images/0572/4749/2167a.png)
=![(.83)^{10}](/tpl/images/0572/4749/62e90.png)
= 0.155
Ответ:
what grade r u in this doesnt seem that hard try to do it
Step-by-step explanation: