SOLUTION: Cool tel is large mobile service provider it has conducted a study on 10000 customers about length of time they have to wait at its customer care centres before being facilitated b

Algebra.Com
Question 1192106: Cool tel is large mobile service provider it has conducted a study on 10000 customers about length of time they have to wait at its customer care centres before being facilitated by cool's officer the results of study are
waiting time (min) 0 1 2 3 4 5 6 7
no of customers 380 1120 1680 1780 1960 1530 1200 330
calculate the probability that a customers must wait before being facilitated?
Found 2 solutions by ikleyn, greenestamps:
Answer by ikleyn(52794)   (Show Source): You can put this solution on YOUR website!
.

Read your post attentively and think on what you read.

The probability is a fraction, whose denominator is the total number of customers,
while the numerator is the total number of customers minus 380.



Answer by greenestamps(13200)   (Show Source): You can put this solution on YOUR website!


"calculate the probability that a customers must wait before being facilitated"

Every customer needs to wait, even if it is only a fraction of a second. So the probability a customer must wait is 1.000.

ANSWER: 1

If the statement of the problem was supposed to say "...wait 5 or more minutes", then the question could be answered using the basic definition of probability:
                             number who wait 5, 6, or 7 minutes
P(wait 5 or more minutes) = ------------------------------------
                                        total number
RELATED QUESTIONS

Cool tel is large mobile service provider it has conducted a study on 10000 customers... (answered by ikleyn)
In a random sample of 150 households with an Internet connection,33 said that they had... (answered by stanbon,ewatrrr)
A major cell phone service provider has determined that the number of minutes that its... (answered by stanbon)
Minh Phan is going over the numbers one more time. He is about to make the most important (answered by psbhowmick)
Scarlett and Heather, the owners of an upscale restaurant in Dayton, Ohio, want to study... (answered by Theo)
A market survey is conducted by a government regulator to determine the proportion of... (answered by Boreal)
A fast food restaurant has heard that some of its customers have been dissatisfied with... (answered by stanbon)
Determine which level of measurement— nominal, ordinal, interval, or ratio—is used in the (answered by richard1234,loki1436)
Dude Ranches Incorporated was founded on the idea that many families in the eastern and... (answered by lynnlo)