The file Market Penetration contains Facebook penetration values (the percentage of the country population that are Facebook

Question:

The file Market Penetration contains Facebook penetration values (the percentage of the country population that are Facebook users) for 22 of the world’s largest economies:

a. Construct a 95% confidence interval estimate for the population mean Facebook penetration.

b. What assumption do you need to make about the population to construct the interval in (a)?

c. Given the data presented, do you think the assumption needed in (a) is valid? Explain.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Business Statistics A First Course

ISBN: 9780321979018

7th Edition

Authors: David M. Levine, Kathryn A. Szabat, David F. Stephan

See More Books

Question Posted: Jul 16, 2015 07:28 PM

See More Questions

The file Market Penetration contains Facebook penetration values (the percentage of a country's population that are Facebook users) for 15 countries: 50.19 25.45 4.25 18.04 31.66 49.14 39.99 28. 29...
The file Market Penetration contains the market penetration value (that is, the percentage of the country population that are users) for the 15 countries the lead the world in total number of...
The file Market penetration contains the market penetration value (that is, the percentage of the country population that are users) for the 15 countries that lead the world in total number of...
Coffin Corporation appropriately uses the installment-sales method of accounting to recognize income in its financial statements. The following information is available for 2014 and 2015....
Your professor has decided that, from now on, students who receive less than a 60 percent grade on any exam will be eligible to go to a review session. If they attend the session, they will receive...
Describe an agency relationship and how it may/will take shape for your small company. As the sole employee and investor in your startup, what agency conflicts might arise?
Define a vertical restraint on trade, and contrast this definition with that of a horizontal restraint on trade. Which type of restraint is considered to be a greater threat to competition under the...
The following information is taken from the accounts of Latta Company. The entries in the T-accounts are summaries of the transactions that affected those accounts during the year. The overhead that...
1 What is HRM 2 What is Training and Developmnt 3 What is Recruitment 4 What is Selection 5 What is HRP 6 What is Job Analysis 7 What is a Career Planning and Development 8 What is Job-Description 9...
Consider a uniform quantizer characterized by the inputoutput relation illustrated Figure a. Assume that a Gaussian-distributed random variable with zero mean and unit variance is applied to this...
A manufacturing company produces electric insulators. You define the variable of interest as the strength of the insulators. If the insulators break when in use, a short circuit is likely. To test...
One operation of a mill is to cut pieces of steel into parts that are used in the frame for front seats in an automobile. The steel is cut with a diamond saw, and the resulting parts must be cut to...
The following are the comparative statements of cash flows for Yellow Spruce Incorporated. Required: a. Discuss the companys ability to meet its non-operating needs for cash over these three years,...
Do you think that the positivity of the office space is mostly on the employer or employee
You're assigned a group project and asked to come up with the following bold items for the team. Desirable team behaviors and consequences for non compliance, team conflict management plan, and team...
Consider the 3 generators with the characteristics given in Tab. 1, they must satisfy the load requirement in Tab. 2. Unit Pmin Pmax Marginal cost ($/MWh) Min up time (h) ($) No-load cost ($) 1 30 3...
Managing Linux users - Some of the topics in this week's material were around managing Linux user accounts. What are some of the concerns around this and some techniques to support managing Linux...
Using the brand "Naked Juice.", share the the following: How does your brand create brand awareness and how recognizable is the brand? Share a digital ad or social media post. Who is the target...
Suppose that 60% of all people prefer Coke to Pepsi. We randomly choose 500 people and ask them if they prefer Coke to Pepsi. What is the probability that our survey will (erroneously) indicate that...
As water moves through the hydrologic cycle, water quality changes are common because of natural phenomena or anthropogenic pollution. Using Figure 11.1, describe how water-quality changes occur...
If P(B) = 0.30, P(A|B) = 0.60, P(B) = 0.70, and P(A|B) = 0.50, find P(B|A).
If P(B) = 0.05, P(A|B) = 0.80, P(B) = 0.95, and P(A|B) = 0.40, find P(B|A).
The following table contains the probability distribution for the number of traffic accidents per day in a small town: a. Calculate the mean number of accidents per day. b. Calculate the standard...
To set up an optimal portfolio problem considering transactions costs, we need to adjust the expected return of stocks and calculate the transactions-cost-adjusted expected return. Suppose that a $1...
How to calculate the average precision (AP) for each adopted query and the mean average precision (MAP), based on both arithmetic and geometric means, must be calculated in terms of interpolated...
Using the relative contribution of the B to the overall expected portfolio return, show whether index leverage or single-stock leverage results in better leverage for a portfolio manager who is good...

The file Market Penetration contains Facebook penetration values (the percentage of the country population that are Facebook

Question:

56 57 43 55 42 35 7 25 42 17 43 6 31 28 59 20 27 36 45 80 57 56

Step by Step Answer:

a PHStat output Xbar t S n 394091 20796 184563 22 3123 4759 b T...View the full answer

Business Statistics A First Course

Students also viewed these Statistics questions