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

Question from inventory, CASE STUDY 1 3 MARKS An audit of the...

CASE STUDY 1 3 MARKS An audit of the accounting records of Loch Ness Ltd. for the year ending 30 June 2012 discovered that the ending inventory balance

Budgetary accounts, Budgetary accounts Accounts used to go through the ado...

Budgetary accounts Accounts used to go through the adopted budget into the all-purpose ledger as part of the administration control method of formal budgetary addition.

Methods of members, the A- frame is supported by a hinge at A and A roller ...

the A- frame is supported by a hinge at A and A roller at e

Normal distribution, Lifts usually have signs indicating their maximum capa...

Lifts usually have signs indicating their maximum capacity. Consider a sign in a lift that reads “maximum capacity 1400kg or 20 persons”. Suppose that the weights of lift-users are

Population, Explain what is meant by population and sample

Explain what is meant by population and sample

Source of economic growth and development, Question 1: (a) Describe the...

Question 1: (a) Describe the factors that contributed to the adoption of structural adjustment programme by a majority of Least Developed Countries in the 1980s? (b) Describ

Metaphor, writing a Introduction on Metaphor

writing a Introduction on Metaphor

Sampling, What is the sampling and it importance in daily routain life. Exp...

What is the sampling and it importance in daily routain life. Explain stratify sampling

Conceptual structure of financial, conceptual structure of financial In...

conceptual structure of financial In financial accounting, There were many breaks in the conceptual structure of individual forums for example both the forums hadn't conducted

Confidence Intervals, In each of the following cases, compute 95 percent, 9...

In each of the following cases, compute 95 percent, 98 percent, and 99 percent confidence intervals for the population proportion p. p=.1, n=30, p = .1, n = 100, p = .5, n = 50, p

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