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polet [3.4K]
2 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]2 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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Write the method makeNames that creates and returns a String array of new names based on the method’s two parameter arrays, arra
Gwar [14]

Answer:

  1. import java.util.Arrays;
  2. public class Main {
  3.    public static void main(String[] args) {
  4.        String [] first = {"David", "Mike", "Katie", "Lucy"};
  5.        String [] middle = {"A", "B", "C", "D"};
  6.        String [] names = makeNames(first, middle);
  7.        System.out.println(Arrays.toString(names));
  8.    }
  9.    public static String [] makeNames(String [] array1, String [] array2){
  10.           if(array1.length == 0){
  11.               return array1;
  12.           }
  13.           if(array2.length == 0){
  14.               return array2;
  15.           }
  16.           String [] newNames = new String[array1.length];
  17.           for(int i=0; i < array1.length; i++){
  18.               newNames[i] = array1[i] + " " + array2[i];
  19.           }
  20.           return newNames;
  21.    }
  22. }

Explanation:

The solution code is written in Java.

Firstly, create the makeNames method by following the method signature as required by the question (Line 12). Check if any one the input string array is with size 0, return the another string array (Line 14 - 20). Else, create a string array, newNames (Line 22). Use a for loop to repeatedly concatenate the string from array1 with a single space " " and followed with the string from array2 and set it as item of the newNames array (Line 24-26). Lastly, return the newNames array (Line 28).

In the main program create two string array, first and middle, and pass the two arrays to the makeNames methods as arguments (Line 5-6). The returned array is assigned to names array (Line 7). Display the names array to terminal (Line 9) and we shall get the sample output: [David A, Mike B, Katie C, Lucy D]

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3 years ago
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Answer:

clipart ...........................

Explanation:

clipart is the correct answer for the above question.

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2 years ago
Select the examples that best demonstrate likely tasks for Revenue and Taxation workers. Check all that apply. Brenda works for
umka2103 [35]

Answer:

Brenda works for the IRS reviewing paperwork.

Jenny reviews buildings to determine how much money they are worth

Kareem advises businesses to make sure they handle their finances correctly.

Explanation:

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What is the answer for this
tigry1 [53]

Answer:

No, not that one. Try again.

Explanation:

string comparison is case sensitive.

8 0
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What is the only language a microprocessor can process directly but most programmers almost never write programs in this code? Q
elixir [45]
A microprocessor can directly process machine code but most programmers almost never write in it.
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