Describe the number of phone calls received from customers

Reference no: EM133217855

Assignment:

An intemet service provider info-center receives customers complains via phone The probability model below describes the number of phone calls received from customers during an hour X:Phone calls received.

0 1 2. 3. 4. 5

P(X=x)

0.15

0.04

0.05

0.27

0.40

0.09

(a) What is the mean of the number of phone calls an employee expect to reccive in a given hour? (Expected value-mean)?

(b) What is the variance of the number of phone calls an employee expect to receive in a given hour?

Formula for Mean = €x.px. Variance= €x2.Px-mean square

Question 2. A Pharmaccutical company claims that a new drug is effective against COVID-19. 60% of the time. The drug is tested on 24 selected patients.

2) Use the Binomial distribution to find the probability that exactly 16 patients recovered from COVID-19? (Round your answer to the nearest thousandth).

a) What is the mean of the number of patients who recovered from COVID-19?

b) What is the variance of the number of patients who recovered from COVID-19?

Binomial formula P(x)=nCx¥x(1-¥)n-x

Question 3:

An airline knows from experience that the distribution of the number of suitcases that get lost each week on a certain route is normal with (mean) u = 15.5 and (Standard Deviation) G = 3.6.

What is the probability that during a given week the airline will lose between 11 and 19 suitcases?

Formula z= X-mean/variance

Reference no: EM133217855

Questions Cloud

Evaluate consumer behaviours of post fiji : Critically evaluate consumer behaviours of Post Fiji and recommend how Post Fiji can assure convenience, affordability and reliability and safety.

What were some of the differences you noticed : Circulator Nurses Reflection Questions - What were some of the differences you noticed between the role of the circulator and the role of the floor nurse

Create the use case catalog and the bubble : create the use case catalog and the "bubble" (use case) diagram and For each use case you should identify a title and basic description

Calculate the profit-maximizing price : Calculate the profit-maximizing price and quantity for Jack's pizza business. Illustrate the market equilibrium with a proper diagram

Describe the number of phone calls received from customers : The probability model below describes the number of phone calls received from customers during an hour X:Phone calls received.

How do you think balance is maintained : How do you think balance is maintained? What do you think should prevail, IT dominance or user dominance? Why? Illustrate your answer with scenarios

How do you suggest job seekers communicate : How do you suggest job seekers communicate their unique value-their personal brandto potential employers online and What are the best ways to network online

What is the relationship between law, morality and ethics : Answer - What is the relationship between law, morality and ethics? Should the law reflect morality or ethics, or both? Explain

What is length in the real world : What is length in the real world and How does it generalize to higher dimension? Does the basis in which x is defined matter?

User Account

All Pages