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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.

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// This pseudocode is intended to describe
ddd [48]

Applying given information of a computational language in pseudocode, a code may be written to represent computing the price of an item on sale for 10% off.

<h3>What is a pseudocode?</h3>

A pseudocode can be considered as a depiction of the steps represented in an algorithm, usually in plain (natural) language.

<em>//This </em><em>pseudocode </em><em>is intended to describe</em>

<em>//computing the </em><em>price </em><em>of an </em><em>item </em><em>on </em><em>sale </em><em>for 10% off</em>

<em>START</em>

<em>  input origPrice</em>

<em>  </em><em>discount </em><em>= origPrice * 0.10</em>

<em>  </em><em>finalPrice </em><em>= origPrice - discount</em>

<em>  output finalPrice</em>

<em>STOP</em>

<em>//This pseudocode is intended to </em><em>compute </em><em>the number</em>

<em>//of miles per </em><em>gallon </em><em>you get with your car.</em>

<em>START</em>

<em>  input milesTraveled</em>

<em>  input gallonsOfGasUsed</em>

<em>  milesPerGallon = milesTraveled / gallonsOfGasUsed</em>

<em>     //milesPerGallon is computed using </em><em>division</em>

<em>  output milesPerGallon</em>

<em>     //miles is misspelled, and the P in </em><em>milesPerGallon </em><em>should be uppercase</em>

<em>STOP</em>

<em>  //</em><em>Program </em><em>should end with stop</em>

<em>//This pseudocode is intended to describe</em>

<em>//computing the </em><em>per day cost </em><em>of your rent</em>

<em>//in a 30-day month</em>

<em>START</em>

<em>  input rent</em>

<em>  costPerDay = rent / 30</em>

<em>     // Comment indicates 31-day month</em>

<em>  output costPerDay</em>

<em>     // output should be </em><em>costPerDay</em>

<em>STOP</em>

Learn more about the pseudocode here :

brainly.com/question/13208346

#SPJ1

3 0
1 year ago
What happens to an LR if they troll/spam?
Mkey [24]
They have a chance of being blocked
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3 years ago
9.11: Array Expander
vodka [1.7K]

The Array Expander is an illustration of arrays and functions.

  • Arrays are variables that stores multiple values
  • Functions are named statements that are executed when called

<h3>The Array Expander program </h3>

The Array Expander program written in C++, where comments are used to explain each action is as follows:

#include <iostream>

using namespace std;

//This declares the Array Expander function

int* ArrayExpander(int *oldArr, int size){

   //This declares the new array

   int *newArr = new int[size * 2];

//This iteration sets values into the new array

   for (int i = 0; i < size * 2; i++) {

       if(i < size){

           *(newArr+i) = *(oldArr+i);

       }

       else{

           *(newArr+i) = 0;

       }

   }

//This returns a pointer to the new array

   return newArr;

}

//The main method begins here

int main(){

//This declares the length of the array, N

   int N;    

//This gets input for N

   cin>>N;

   int initArr[N];

//If N is between 1 and 50

   if(N > 0 && N <=50){

//This iteration gets values for the array

       for(int i = 0; i<N; i++){

           cin>>initArr[i];

       }

//This calls the Array Expander function

   int *ptr = ArrayExpander(initArr, N);

//This iteration prints the elements of the new array

   for (int i = 0; i < N*2; i++) {

       cout << ptr[i] << " ";

   }

   }

  return 0;

}

Read more abou C++ programs at:

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3 0
2 years ago
Is iPhone better than android
andriy [413]

Answer:

It's up to personal preference.

Explanation:

iPhone/Apple gives more compliments to security than Android.

Android has more friendly user GUI and dev tools.

4 0
3 years ago
Read 2 more answers
Output each floating-point value with two digits after the decimal point, which can be achieved as follows:
sdas [7]

Answer:

The modified program in Python is as follows:

import math

paint_colors = {'red': 35,'blue': 25,'green': 23}

wall_height = int(input('Enter wall height (feet):\n'))

wall_width = int(input('Enter wall width (feet):\n'))

area = wall_height*wall_width

print('Wall area:',area,'square feet')

paint_needed = area/350.0

print('Paint needed: {:.2f} gallons'.format(paint_needed))

print('Cans needed:',round(paint_needed),'can(s)')

color = input("Choose a color to paint the wall: ")

print("Cost of purchasing", color, "paint: $",paint_colors[color])

Explanation:

The italicized are given from the question [unchanged]

<em>import math</em>

<em> paint_colors = {'red': 35,'blue': 25,'green': 23} </em>

<em>wall_height = int(input('Enter wall height (feet):\n')) </em>

This gets input for width

wall_width = int(input('Enter wall width (feet):\n'))

Calculate the wall area

area = wall_height*wall_width

Print the calculated wall area

print('Wall area:',area,'square feet')

Calculate the amount of paint needed

paint_needed = area/350.0

Print the amount of paint needed to 2 decimal places

print('Paint needed: {:.2f} gallons'.format(paint_needed))

Print the amount of can needed to nearest integer

print('Cans needed:',round(paint_needed),'can(s)')

Prompt user for color of paint [here, we assume the user input is correct]

color = input("Choose a color to paint the wall: ")

Prints the corresponding amount for the color

print("Cost of purchasing", color, "paint: $",paint_colors[color])

3 0
2 years ago
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