Can the company claim that they are faster than the average, Ask an Expert

Statistics

Nationwide, the average waiting time until electric utility customer service representative answers a call is 300 seconds per call. The Gigantic Kilowatt Energy Company took a sample of 35 calls and found that, on the average, they answered in 240 seconds per call with a standard deviation of 50. Can the company claim that they are faster than the average utility?

a. No, because -0.20 falls in the critical region

b. Yes, because -7.10 falls in the critical region

c. No, because -1.20 falls in the critical region

d. Yes, because -0.20 falls in the critical region

View complete question

Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9171902

Have any Question?Write your Review or question?

Related Questions in Statistics and Probability

What are the benefits of a country having a positive

What are the benefits of a country having a positive Current Account and what are the benefits of a country having a negative Current Account?

Jen amp barrys fast fresh salad bags starts with 280000

"Jen & Barry's Fast Fresh Salad Bags" starts with $280,000 invested. Jen and Barry pay 20% down and finance the balance with a 20-year small business loan at 4.5% compounded monthly. What is the amount of their monthly l ...

Loking for guidancea normal population has a mean of mu

Looking for guidance: A normal population has a mean of μ = 100. A sample of N = 36 is selected from the population, and a treatment is administered to the sample. After treatment, the sample mean is computed to be = 106 ...

Lt a and b be two events where pa 048 pb 022 and pbcac

Let A and B be two events where P(A) = 0.48, P(B) = 0.22, and P(BC|AC) = 0.91. What is the probability of A or B (a union b)?

What are the minimum first quartile median third quartile

What are the minimum, first quartile, median, third quartile, maximum, interquartile range, and range of the data set below? Make a box-and- whisker plot. 25, 25, 30, 35, 45, 45, 50, 55, 60, 60

With whom should you consult about design strategies to

With whom should you consult about design strategies to improve products/services and why would you consult with these individuals or groups?

Martin enterprises needs someone to supply it with 109000

Martin Enterprises needs someone to supply it with 109,000 cartons of machine screws per year to support its manufacturing needs over the next five years, and you've decided to bid on the contract. It will cost you $740, ...

Medical researchers studying the effects of a low carb diet

Medical researchers studying the effects of a low carb diet versus a normal diet randomly assigned obese patients to one of the two diets. The patients were followed up with after several months and the amount of weight ...

A researcher determines that students study an average of

A researcher determines that students study an average of 60 15 (M SD) minutes per week. Assuming these data are normally distributed, what is the z score for students studying 45 minutes per week?

Thirty percent of the managers in a certain company have

Thirty percent of the managers in a certain company have MBA degrees as well as professional training. Eighty percent of all managers in the firm have professional training. If a manager is randomly chosen and found to h ...

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