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

Accreted value definition, An assessment time frame for certain purchases a...

An assessment time frame for certain purchases and debt equipment that reviews on the stability piece only that part of their face value that shows major and interest acquired curr

General insurance accounts preparation and Regulation of inv, X Ltd had 100...

X Ltd had 100000 9% redeemable preference shares of Rs.100 each full paid. The company decided to redeem these pref. shares at par by issue of sufficient number of equity shares of

Linear power supply, LINEAR POWER SUPPLY (JPG) The Goodwill GPC3030D pow...

LINEAR POWER SUPPLY (JPG) The Goodwill GPC3030D power supply is an example of a linear power supply. Discoveries that were made in researching this power supply are things such

Luxor case, Susan’s proposed budget for 2011 includes a substantial repayme...

Susan’s proposed budget for 2011 includes a substantial repayment of the bank loan. If the repayment occurs, is the firm likely to break even in 2012? Explain.

meanings of statistics by different authors, meanings of statistics by dif...

meanings of statistics by different authors and importance of statistics in the field of Education

What is degrees of freedom, What is  Degrees of Freedom : While comparing ...

What is  Degrees of Freedom : While comparing the calculated value of X2 with the table value we have to determine the degrees of freedom. By degrees of freedom we mean the number

Marginal and absorption costing, difference of them for covering the follo...

difference of them for covering the following: 1.purpose of reporting 2.FORMAT OF INCOME STATEMENT

Genotypes are crossed ttyypp x ttyypp - Genetics Biology, Consider the gi...

Consider the given below. T _ tall is dominant to dwarf (tt). Y _ yellow seed is dominant to green seed (yy). P _ purple flower is dominant to white flower (pp). If plants wi

Business valuation to determine the stock price of an entity, Definition of...

Definition of business valuation to determine the stock price of an entity. Business valuation is the value or price where a unit would be purchased at a given point in time. Usual

Want to get job, I am Hussain and I have done master in Statistics. Current...

I am Hussain and I have done master in Statistics. Currently I am doing Mphil Statistics from Pakistan. I want to get online Statistics Tutor job. So contact with me as soon as pos

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