SOLUTION: an office worker claims that at most 30% of his phone calls make sale. If he makes 190 calls in night, what is the probability that he will make more than 50 sales?
Algebra ->
Probability-and-statistics
-> SOLUTION: an office worker claims that at most 30% of his phone calls make sale. If he makes 190 calls in night, what is the probability that he will make more than 50 sales?
Log On
Question 821673: an office worker claims that at most 30% of his phone calls make sale. If he makes 190 calls in night, what is the probability that he will make more than 50 sales? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! an office worker claims that at most 30% of his phone calls make sale. If he makes 190 calls in night, what is the probability that he will make more than 50 sales?
---------
Binomial Problem with n = 190 and p(sale) = 0.30
------
P(50<= x <=90) = 1 - P(0<= x <=49) = 1 - binomcdf(90,0.3,49) = 0.000000408...
================
Cheers,
Stan H.
================
(