If the service manager wants to 95 confident that the, Ask an Expert

Statistics

A utility requires service operators to answer telephone calls from customers in an average of 0.1 minutes or less, and either respond to them or refer the customer to the proper department within 0.5 minute. The manager is interested in estimating the actual overall time for both components, in total. A pilot study of 30 actual operator times was drawn, and the results are given in the following table. If the service manager wants to 95% confident that the overall time is correctly estimated, with a 3 percent probability of error, what sample size should be taken.
Component Mean time standard deviation

Answer 0.1023 0.0183
Service 0.5290 0.0902

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9110862

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

The random variablenbspxnbsptakes on the values 5 20 30 and

The random variable X takes on the values 5, 20, 30, and 200 with probabilites 0.60, 0.30, 0.08, and 0.02 respectively. Use the statistical capacity of your calculator to find the expected value of X rounded to one p ...

Determine the type of distribution for the following

Determine the type of distribution for the following situation: Draw marbles from a bag which contains 5 red marbles, 6 blue marbles and 4 green marbles with replacement until you get a blue marble. a) Binomial b) Pois ...

Inbspa statistics instructor wants to measure the

I. A statistics instructor wants to measure the effectiveness of his teaching skills in a class of 66 students ( N = 66). He selects students by waiting at the door to the classroom prior to his lecture and pulling asid ...

An fbi survey shows that about 70 of all property crimes go

An FBI survey shows that about 70% of all property crimes go unsolved. Suppose that in your town 10 such crimes are committed and they are each deemed independent of each other. What is the expected number of crimes that ...

The probability that someone made a purchase at a store is

The probability that someone made a purchase at a store is 0.36. You randomly select 15 people who went to the store. The random variable x represents the number of people who made a purchase. a. Find the probability tha ...

Jeremy needs to start paying back his student loan the

Jeremy needs to start paying back his student loan. The amount he owes is $14,069.80 with an APR of 6.94%. Assuming he will take 10 years, how much will his monthly payment be?

Show your worksheel inc has 7 percent coupon compounded

Show your work Sheel INC. has 7 percent coupon ( compounded semiannually) bonds on the market with 10 years to maturity, and the par value of $1,000. At what price should bonds be selling for if the YTM is 5%? Had the bo ...

Question 1 the us census bureau needs to estimate the

Question 1. The U.S. Census Bureau needs to estimate the median income of females in the U.S. They collect incomes from 3500 females. Choose the best answer. Justify for full credit. (a) Which of the followings is the va ...

We would like to estimate the true average age of customers

We would like to estimate the true average age of customers for a particular company. How large would the sample size need to be for the margin of error (based on 95% confidence) to be 1 year? Suppose that, based on prev ...

Hayley motorcycle company just paid a dividend of 14 today

Hayley Motorcycle Company just paid a dividend of $1.4 today, and is expected to pay a dividend in year 1 of $1.8, a dividend in year 2 of $2.3, a dividend in year 3 of $2.9, and a dividend in year 4 of $3.8. After year ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Statistics and Probability Expert