Assume the above data represents the entire population of

Reference no: EM13631527

An irate customer called dollar day mail order company 40 times during the last two weeks to see why his order had not arrived. each time he called, he recorded the length of time he was put "on hold" before being allowed to talk to a customer service representative.

x = 1 2 3 4 5 6 7 8 9 10 11 12 13

f = 1 1 1 2 6 7 5 6 6 2 1 1 1

Assume the above data represents the entire population of people calling the dollar day mail order company.

a. Use the relative frequencies to find P(x) for x= 1 to 13

b. What is the probability that a customer selected at random had to wait more than 5 minutes?

c. What is the probability that a caller waited less than or equal to 4 minutes?

d. Compute the expected value of the x distribution.

e. Compute the standard deviation for the x distribution

Reference no: EM13631527

Questions Cloud

For a box of 10 kg how long does it take for the box to : boxes come off a conveyor system at a velocity of 8 ms and slide across a horizontal frictionless surface into a

Assume that a simple random sample has been selected froma : assume that a simple random sample has been selected froma normally distributed population and the test given

The simple steam power cycle in prob 423 in modified in the : the simple steam power cycle in prob 4.23 in modified in the following way. steam entering the turbine is expanded to

Explain qualitatively how it is possible for the electric : 1. explain qualitatively how it is possible for the electric field at locations near the center of a uniformly charged

Assume the above data represents the entire population of : an irate customer called dollar day mail order company 40 times during the last two weeks to see why his order had not

What is the best predicted iq of the older childgiven that : suppose iq score were obtained from a randomnly selected siblings.for such 20 pairs of people the linear corelation is

If the electric field exceeds about 3106 nc in air a spark : 1. if the electric field exceeds about 3106 nc in air a spark occurs. approximately what is the absolute value of the

A 01 kg bullet fired from a rifle enters a very large body : a 0.1 kg bullet fired from a rifle enters a very large body of water and comes to rest. as a result of aerodynamic drag

What is the best predicted iq of the older childgiven that : suppose iq score were obtained from a randomnly selected siblings.for such 20 pairs of people the linear corelation is

User Account

All Pages