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

What is the point estimate for the mean amount, 1. What size sample will be...

1. What size sample will be needed to construct a 95% confidence interval on a ballot issue if the estimate must be 2% of the actual percent. This issue looks very close in the el

Holding period return, Holding period return: Holding period return is the ...

Holding period return: Holding period return is the return earned by the virtue of holding an asset over a given period. The return is equal to the income and other gains earned fr

Books of original entry, Books of original entry Books of original entranc...

Books of original entry Books of original entrance are a record in which the various or many other transactions are initially and formally recorded and serve up as the straight so

Assignment, How much it will cost to get an assignment

How much it will cost to get an assignment

Truss, state the condition followed by dimple truss.

state the condition followed by dimple truss.

Corporate B onds/Preffered Stocks, If an exact answer isn''t possible, I re...

If an exact answer isn''t possible, I really just need a guide. The company we are using is GameStop Corp, listed as GME on the NYSE. Using the supplied information and referring

Confidence interval, Ask quesA buffalo, your cola distributor is featuring ...

Ask quesA buffalo, your cola distributor is featuring a super-special sale on 12- packs. She wonders where in the grocery store to place the cola for maximum attention. Should it b

Calculate the investments through model, Anna is considering investing $150...

Anna is considering investing $150,000 by dividing it into three investments. But she is not sure how much to put in each one. The first investment is known to follow a uniform dis

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