Question: Suppose that 60 internet-users are randomly selected and monitored to see how long each user spends on Facebook daily. The average amount of time spent

Suppose that 60 internet-users are randomly selected and monitored to see how long

each user spends on Facebook daily. The average amount of time spent on Facebook

among these users turned out to be 40 minutes per day with a standard deviation of 15

minutes.

(a) Find a Confidence interval for the average amount of time spent on Facebook by

all internet-users which has a confidence level of 99%.

(b) What does the confidence interval in (a) tell us?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Q:

recolor(img, color) - Changes all non-white pixels of the image referred to by the parameter img to the specified color, and returns a new image with the changes. img is a 2D array of RGB pixels as...

Q:

Mon. 11/4 - "Zynga" CASES EXHIBIT 2 Zynga Balance Sheets ($ thousands, except par value) December 31, December 31, 2016 20 15 CASE 4 Assets ZYNGA: IS THE GAME OVER?' Current assets: Cash and cash...

Q:

You own a small storefront retail business and are interested in determining the average amount of money a typical customer spends per visit to your store. You take a random sample over the course of...

Q:

nodes, but at least its bias can be quantified by Markov Chain L. INTRODUCTION analysis and thus can be corrected via appropriate re-weighting The popularity of online social networks (OSNs) in...

Q:

It is Snapchat A which is found in your course pack. You are to turn in an excel a) excel spreadsheet with formulas for calculations. The spreadsheet should show cash flow, WACC calculation, firm...

Q:

\fTable of Contents List of Figures R2 - Internal Competitive Analysis Internal Competitive Analysis of Top Tier Firms The social networking industry is split into two market segments: Consumer and...

Q:

\fTable of Contents List of Figures R2 - Internal Competitive Analysis Internal Competitive Analysis of Top Tier Firms The social networking industry is split into two market segments: Consumer and...

Q:

(1) Which of the three company's approaches to using people analytics for talent acquisition and development is most appealing (or most concerning)? (2) Should Fukuhara turn on the most advanced part...

Q:

For the exclusive use of F. Ortolano, 2015. 9-910-036 REV: APRIL 11, 2011 BENJAMIN EDELMAN THOMAS R. EISENMANN Go oogle In nc. Go oogle's mission is to organize the world's inf n nformation and make...

Q:

For the exclusive use of S. Setiawan, 2015. 9-910-036 REV: APRIL 11, 2011 BENJAMIN EDELMAN THOMAS R. EISENMANN Go oogle In nc. Go oogle's mission is to organize the world's inf n nformation and make...

Q:

Explain why this alternative is the recommendation. Use details here! Sell the company on your idea! Use the case below for help. (PARAGRAPHS) This is the alternative soultion**Merger & Acquisition...

Q:

(a) If à is a linear operator, {(i} is a complete, orthonormal basis, and u is an arbitrary function, show that Expand u in terms of the set {(i}, apply à to this expansion, and then...

Q:

A beam is fabricated by bolting together two W200 x 100 sections as shown. The beam supports a uniformly distributed load of intensity wo = 30 kN/m on its 10-m simply supported span. (a) Determine...

Q:

Guess the value o f the l i m i t ( i f i t exists ) b y evaluating the function a t the given numbers ( c o r r e c t t o 5 decimal places ) : x = - 7 . 9 , - 7 . 9 9 , - 7 . 9 9 9 , - 7 . 9 9 9 9 ,...

Q:

2) [25 pts] Firm 1 and firm 2 must implement a policy d from a set of possible policies D. After d is installed, it will affect the payoff function for each firm according to concave functions II and...

Q:

Shelley Ltd pays its salaries fortnightly in arrears. The next pay day is Thursday 2 July. The fortnightly salary expense is $30,000 of which $ 10,000 is retained to pay the Australian taxation...

Q:

8. |(Incos e -)dx cos 3x

Q:

On September 1, 1988, Cobb Co. issued a note payable to National Bank in the amount of $900,000. bearing interest at 12%, and payable in three equal annual principal payments of $300,000. the bank's...

Q:

Please determine the tax consequences of the following transactions (consider the impact of all of these transactions together and not as separate fact patterns): 1. Tractor Corp receives $100,000 of...

Q:

Global Business Read the text and answer these questions 3. Identify three reasons why Marks & Spencer wants to accelerate the growth of its international business. 4. Explain what is meant by the...

Q:

2. In this chapter, the reader should reflect on the following concepts: benchmark-ing, competence development, thought dispositions, identity and perception.

Q:

Is it necessary to change something in your everyday life in order for you to achieve the goal?

Q:

What comments do you get from the outside world in the imagined future when you have achieved what you wanted?