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

Index numbers, What are the advantages and disadvantages of index numbers

What are the advantages and disadvantages of index numbers

Feature of accounting transaction, Classification feature of Accounting Tra...

Classification feature of Accounting Transaction. Under the classification accountant posts the entries into their respective ledgers in the Accounts Books. Every Account entry

What is the probability that a major defect is detected, Back to the worksh...

Back to the workshop the previous problem but assuming that in each of the three stages of development, there is a certain probability that a major defect is detected. When such a

Revenue recognition assigment, When selling books through insaltalments and...

When selling books through insaltalments and internet, what is an alternative selling method for better revenue recording?

Marginal costing and break-even analysis, Marginal costing and Break-even a...

Marginal costing and Break-even analysis According to C.I.M.A. Manchester, "Marginal Price means the quantity at any given variety of result by which get worse scenario costs ar

Fertility-define the annual crude birth rate, Fertility:  In order to study...

Fertility:  In order to study at which speed, at which the population is increasing, fertility rates are used which are of various types? Important among these are: Crude birth rat

Exercises problem solving, a manufacturer claims that 60% of beer drinkers ...

a manufacturer claims that 60% of beer drinkers perfer his beer. A query with 30 beer drinkers selected at random showed that 16 of them prefer this brand.(a.)Does the evidence sup

Homogeneity, Let f (?) be the production function associated with a single-...

Let f (?) be the production function associated with a single-output technology, and let Y be the production set. Show that Y satisfies constant returns to scale if and only if f (

Magnetic susceptibility experiment, . Good day, Using 4-inch pole caps and ...

. Good day, Using 4-inch pole caps and a Mettler M5 balance, I got all the values required in order to calculate the magnetic susceptibility of several inorganic compounds such as

Activity Based Costing, Activity Based Costing, Accounting Traditional cost...

Activity Based Costing, Accounting Traditional cost accounting has been based on allocating a subjective or calculated range of indirect expenses to direct costs. Activity Based Co

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