statistics, Basic Statistics

Assignment Help:
1. A search engine site claims that, on average, one out of five visitors clicks on an ad.
(a) If 8 users visit the site, what is the probability that at least three click on an ad?
(b) If 8 users visit the site, what is the probability that less than two of them click on an ad?
(c) If 800 users visit the site, would the probability that less than 200 click on an ad be higher or lower than the answer found in part (b)? Write a few sentences explaining your answer- computations are not required (or desired)
(d) Suppose 90 users visit the site during a particular minute, use the normal approximation to estimate the probability that more than 25 of them click on an ad.
(e) If 900 users visited the site, would the probability that more than 250 of them click on an ad be higher or lower than the answer found in part (d)? Write a few sentences explaining your answer- computations are not required (or desired)

2. Suppose that, overall, 5% of all tax returns are audited by the IRS.
(a) If an accountant has 7 clients for whom she prepared tax returns, what is the probability that less than 3 will be audited?
(b) If the accountant has 30 clients, what is the probability that at least one is audited?
(c) Suppose the accountant prepares 500 returns, use the normal approximation to estimate the probability that more than 20 of the returns are audited.

Related Discussions:- statistics

Substitution and income effects , Managers are very interested in how ...

Managers are very interested in how a consumer makes choice among alternatives. In this exercise, we ask you to consider the price of gasoline you may purchase to operate

Draw a scatter diagram relating cigarette, The following data relating ciga...

The following data relating cigarette smoking and death rates for lung cancers in 14 states in the USA. The data are based in part on records concerning 1960 cigarette tax receipts

Management accounting, Defination,Advantages and Limitation, Proper Managem...

Defination,Advantages and Limitation, Proper Management of company,

Systematic sampling, Where an element of randomness is introduce by suing r...

Where an element of randomness is introduce by suing random numbers to pick up the unit with which to start this process of sampling is known as systematic sampling.

Cost accounting question, LO.1 (Activity analysis) The Raleigh plant manage...

LO.1 (Activity analysis) The Raleigh plant manager of Allentown Corp. has noticed the plant frequently changes the schedule on its production line. He has gathered the following in

Marketing research field surveys, In marketing research field surveys ar...

In marketing research field surveys are commonly used to collect primary data from the respondents. 1. Through Personal Interviews: The investigator follows a rigid proced

Probality, conceptof probality, theoretical, distribution, normal,binomial ...

conceptof probality, theoretical, distribution, normal,binomial and poisson

Define salaries, Define Salaries Incomes are usually associated with "wh...

Define Salaries Incomes are usually associated with "white-collar" employees such as employees in offices, supervisors, experts, and experts. Paid employees are often paid semi-

Statistics Project, I will submit a file that explains what is supposed to ...

I will submit a file that explains what is supposed to be done in order to complete the project. And, another file will be submitted that has the blanks in it. I need the work to b

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd