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

Applying missing data, For this assignment, you will have to review each co...

For this assignment, you will have to review each column and make a decision for how to adjust for the missing data. After you correct for missing data in each column, please des

AMOUNT AVAILABLE IN DEBT SERVICE FUNDS , AMOUNT AVAILABLE IN DEBT SERVICE ...

AMOUNT AVAILABLE IN DEBT SERVICE FUNDS An "other debit" common journal value used in the General Long-Term Bills Additional Consideration that designates the quality of resources

Confidence interval, 1. Provide an overview of the scenario and the variabl...

1. Provide an overview of the scenario and the variable involved. Include an explanation of why and how constructing the confidence interval adds value. I.e., why might this inform

Indirect method, in my home work it is a balance sheet 12/31/2010 12/3...

in my home work it is a balance sheet 12/31/2010 12/31/2009 accounts recievable 8000 10000 below it has letter a b c d e f-k wanting the letter with the explaination a

Simple arithamatic mean, following the hight of studen 155,153,168,160,162...

following the hight of studen 155,153,168,160,162,166,167,180,257,165,

Bonds payable, Bonds payable The face worth of bonds issued and honorary. ...

Bonds payable The face worth of bonds issued and honorary. In the case of zero-coupon bonds, however, and the only and the accreted value of the tie is reported as bonds owed on t

Skewnes and kurtosis, which one is better skewed or kurtic distributed data...

which one is better skewed or kurtic distributed data?

What is AXlOM in accounting?, AXIOM, usually, it is a saying that is common...

AXIOM, usually, it is a saying that is commonly recognized on its own merits; in sense, it is an idea that is not vulnerable of confirmation or disproof; its reality is believed to

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