1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
polet [3.4K]
3 years ago
6

Elwin Osbourne, CIO at GFS, Inc., is studying employee use of GFS e-mail for non-business communications. He plans to use a 98%

confidence interval estimate of the proportion of e-mail messages that are non-business; he will accept a 0.05 error. Previous studies indicate that approximately 30% of employee e-mail is not business related. Elwin should sample _______ e-mail messages.
Computers and Technology
1 answer:
ziro4ka [17]3 years ago
3 0

Answer: 456

Explanation:

Given : Significance level : \alpha= 1-0.98=0.02

Critical value : z_{\alpha/2}=2.33

Margin of error : E=\pm0.05

The prior proportion of employee e-mail is not business related: p=0.30

The formula to find the sample size is given by :-

n=(p(1-p))(\dfrac{z_{\alpha/2}}{E})^2

i.e. n=(0.3(0.7))(\dfrac{(2.33)}{0.05})^2=456.0276\approx456

Hence, Elwin should sample 456 e-mail messages.

You might be interested in
A.<br> Post-It note<br> b.<br> notebook<br> c.<br> tutor<br> d.<br> spell check
Ostrovityanka [42]
What is this for? like what is the question?


4 0
3 years ago
After a normal system shutdown, when the computer is turned off, contents of the memory used to store bios settings are
kiruha [24]
The settings are retained

<span>Technically, Bios software is stored in a non-volatile ROM (Read-Only Memory) chip found on the motherboard.  Usually, this kind of chip retains its contents even after a normal system shutdown. Rom chips contains programs that are collectively referred to as BIOS chip or Basic Input/Output Services</span>
8 0
3 years ago
Read 2 more answers
Im lonellly whos down to date me
inna [77]

Answer:

I was actually just looking to help with someone's schoolwork. . .

Explanation:

5 0
3 years ago
Read 2 more answers
Create a lottery game application. Generate three random numbers (see Appendix D for help in doing so), each between 0 and 9. Al
Pachacha [2.7K]

The question is not complete! Here is the complete question and its answer!

Create a lottery game application. Generate three random numbers (see Appendix D for help in doing so), each between 0 and 9. Allow the user to guess three numbers. Compare each of the user’s guesses to the three random numbers and display a message that includes the user’s guess, the randomly determined three-digit number, and the amount of money the user has won as follows:

no matches: 0

any one matching: 10$  

two matching: 1000$  

three matching: 100000$  

Code with Explanation:

#include <iostream>

using namespace std;

int main()

{

int matches=0;

int guess_1, guess_2, guess_3;

int num_1, num_2, num_3;

// get 3 digits from the user

cout<<"Enter first guess digit 0 to 9"<<endl;

cin>>guess_1;

cout<<"Enter second guess digit 0 to 9"<<endl;

cin>>guess_2;

cout<<"Enter third guess digit 0 to 9"<<endl;

cin>>guess_3;

// every time program runs srand() generates new random numbers and rand()%10 makes sure that number is single digit 0 to 9

srand(time(NULL));

num_1=rand()%10;

cout<<"First lottery digit: "<<num_1<<endl;

num_2=rand()%10;

cout<<"Second lottery digit: "<<num_2<<endl;

num_3=rand()%10;

cout<<"Third lottery digit: "<<num_3<<endl;

// store random generated numbers and guess numbers in arrays to compare them

int num[3]= {num_1,num_2,num_3};

int guess[3]={guess_1,guess_2,guess_3};

// compare the arrays to find out how many are matching

   for(int i=0; i<3; i++)

   {

 for(int j=0; j<3; j++)

 {

  if(num[i]==guess[j])

  {    

   matches = matches + 1;

  }

 }

}

cout << "Total Matches are: " <<matches << endl;

// display reward according to the number of matches

if (matches==0)

cout<<"you won: $0"<<endl;

if (matches==1)

cout<<"you won: $10"<<endl;

if (matches==2)

cout<<"you won: $1000"<<endl;

if (matches==3)

cout<<"you won: $100000"<<endl;

return 0;

}

Output:

Enter first guess digit 0 to 9

7

Enter second guess digit 0 to 9

1

Enter third guess digit 0 to 9

5

First lottery digit: 3

Second lottery digit: 7

Third lottery digit: 2

Total Matches are: 1

You won: $10

Enter first guess digit 0 to 9

7

Enter second guess digit 0 to 9

3

Enter third guess digit 0 to 9

4

First lottery digit: 5

Second lottery digit: 4

Third lottery digit: 7

Total Matches are: 2

You won: $1000

5 0
3 years ago
Who is better at fortnite mc creamy or mau?
Mama L [17]

Answer:

neither

Explanation:

fortnite sucks

8 0
3 years ago
Read 2 more answers
Other questions:
  • In three to five sentences, describe how technology helps business professionals to be more efficient. Include examples of hardw
    10·1 answer
  • Which business filing process puts documents or data in the order by date? a. Linear
    7·1 answer
  • Allows an administrator to query a dns database and find the host name associated with a specific ip address or
    15·1 answer
  • The three tasks within data harmonization, namely: data consolidation, data cleansing, and data formatting use techniques called
    8·1 answer
  • Write a function called intersect with four float parameter
    11·1 answer
  • Which term describes the distance from one point on a wave to the same point on the next wave?
    13·2 answers
  • I want to solve this question in C program, Please.
    7·1 answer
  • Can someone please give me Python test 3 it would help me tremendously
    5·1 answer
  • You have a technical interview for a new position in digital media. One of the questions you are asked is this: “A client asks y
    13·1 answer
  • IM a bit confused on what this is asking for exactly.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!