(Answered) In a press release dated october 2 2008 the national cyber

Engineering

In a press release dated October 2, 2008, The National Cyber Security Alliance reported that approximately 80% of adult Americans who own a computer claim to have a firewall installed on their computer to prevent hackers from stealing personal information. This estimate was based on a survey of 3000 people. It was also reported that in a study of 400 computers, only about 40% actually had a firewall installed.

a. Suppose that the true proportion of computer owners who have a firewall installed is .80. If 20 computer owners are selected at random, what is the probability that more than 15 have a firewall installed?

b. Suppose that the true proportion of computer owners who have a firewall installed is .40. If 20 computer owners are selected at random, what is the probability that more than 15 have a firewall installed?

c. Suppose that a random sample of 20 computer owners is selected and that 14 have a firewall installed. Is it more likely that the true proportion of computer owners who have a firewall installed is .40 or .80? Justify your answer based on probability calculations.

View complete question

Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M92648605
Price:- $10

Verified Expert

Priced at $20 Now at $10, Verified Solution

Have any Question?Write your Review or question?

Related Questions in Computer Engineering

Question a description of the tasks and mechanisms that

Question: A description of the tasks and mechanisms that allow you to examine the existing system (a minimum of 3 different tools should be described) A description of conceptual, logical and physical data modeling A des ...

One of the 5 halogens which are diatomic has the fastest

One of the 5 halogens (which are diatomic) has the fastest root mean square velocity at STP. Calculate this velocity in meters per second.

You are running a memory-intensive multimedia application

You are running a memory-intensive multimedia application on your computer, which has 1 GB RAM installed. You observe that the computer momentarily stops responding when you switch between two multimedia applications. 1. ...

Show that set cover can be polynomial-time reduced to

Show that Set Cover can be polynomial-time reduced to CNF-SAT (CNF-SAT is essentially 3SAT without the restriction of having at most 3 literals per clause). Hint: For each set Si in the Set Cover instance, let there be a ...

Taskthe first task is to create your business narrative

Task The first task is to create your business narrative. Some of the questions that you should address include (but are not limited to) the following. •What is the name of your business? •Who will be the users of the sy ...

Question research the internet to obtain information on

Question: Research the Internet to obtain information on Windows Group Policies and the Group Policy Editor. • Review the critical considerations to prepare a procedure guide. • Organize all the steps necessary for imple ...

As a wealthy graduate of the university you have decided to

As a wealthy graduate of the University, you have decided to give back to the University in the form of a scholarship. You have decided to donate a one-time gift of $500,000 that will be invested at a rate of 5.5% per ye ...

The contracts manager at a company needs to make a large

The contracts manager at a company needs to make a large legal document available to an overseas customer. However, she has some challenges: The document contains sensitive information; it is too large to send via e-mail ...

Short papercritically analyze current european and united

Short Paper Critically analyze current European and United States industry standards or recommendations for any Information Technology (IT) area or subarea (e.g., intrusion detection, data recovery, data retention, intru ...

A study indicates that the weights of adults are normally

A study indicates that the weights of adults are normally distributed with a mean of 140 lbs and a standard deviation of 25 lbs. Find a value of weight x such that only 20% of adults weigh less than that. A. 136 B.190 C. ...

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Computer Engineering Expert