# Statistics

A telephone company receives 3 calls every minute on an average.
If an operator has a watch that is not very accurate and which has a normal distribution with mean of 1 minute and standard deviation of 5 seconds, what is the probability that he measures 5 calls in a minute?

## Similar Questions

1. ### Statistics

The probability distribution of number of calls coming to a call center every 15 minute period is shown below. x 5 6 7 8 9 10 11 12 13 p ( x ) 0.02 0.04 0.07 0.08 0.09 0.11 0.12 0.13 0.10 Continuedâ€¦ x 14 15 16 17 18 19 20 p ( x

A survey of mobile call interconnectivity indicates that the average time it takes to connect calls from one network to the other is 25 seconds.Assume the variable is approximately normally distributed and the standard deviation
3. ### statistics

The respiratory rate per minute in newborns varies according to a distribution that is approximately Normal with mean 50 and standard deviation 5. The proportion of observations from a standard Normal distribution that take values
4. ### Statistics

From her firmâ€™s computer telephone log, an executive found that the mean length of 64 telephone calls during July was 4.48 minutes with a standard deviation of 5.87 minutes. She vowed to make an effort to reduce the length of
5. ### statistics

past history indicates that an average of 1.2 calls are received per minute. What is the probability of 3 or more calls per minute
6. ### math

Telephone company A charges \$3.00 for the first minute of any long distance call and \$0.50 for each additional minute. Telephone company B charges \$2.00 for the first minute of any long distance call and \$0.70 for each additional
7. ### Math

A telephone company charges \$0.05 per minute for local calls and \$0.12 per minute for long distance calls.Which expression gives the total cost in dollars for x minutes of local calls and y minutes of long distance calls?
8. ### statistics

Consider the following: A telephone exchange operator assumes that 8% of the phone calls are wrong numbers. -If the operator is accurate, what is the probability that the proportion of wrong numbers in a sample of 726 would be
9. ### statistics

A pop-music record firm wants the distribution of lengths of cuts on its record to have an average of 129 seconds and a standard deviation of 10 seconds so that disc jockeys will have plenty of time for commercials within each
10. ### Statistics

A random sample of 14 evenings at the O'Sullivan house hold showed that the family received an average of 2.4 solicitation calls each evening. The sample standard deviation was s= 0.9. Find a 99% confidence interval for the

More Similar Questions