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AlexFokin [52]
2 years ago
8

When computer users have trouble with their machines or software, Roland is the first person they call for help. Roland helps us

ers with their problems, or refers them to a more-experienced IT employee. Roland holds the position of __________ in the organization. Support Analyst Systems Analyst Network Administrator Database Administator
Computers and Technology
1 answer:
Schach [20]2 years ago
3 0

Answer:

The correct answer is A) Support Analyst

Explanation:

From the question, we can see that Roland is familiar with both machines and software. He is familiar with the operations of both parts of a computer to the end that he can attempt a fix. And if he can't he knows who to refer the end-users to. Usually, some IT personnel that is more experienced.

From the above points, we can safely say that Roland is an IT Support Analyst. He cannot be the Systems analyst because Systems Analysts are usually at the top of the Pyramid. They take on problems that are referred upwards to them from support analysts.

Cheers

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Unscramble thr words <br>1.Nsieg Wiev<br>2.Seeathdat ievw​
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Answer: genis view       headset view

Explanation:

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2 years ago
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A computer retail store has 15 personal computers in stock. A buyer wants to purchase 3 of them. Unknown to either the retail st
Dima020 [189]

Answer:

a. 1365 ways

b. Probability = 0.4096

c. Probability = 0.5904

Explanation:

Given

PCs = 15

Purchase = 3

Solving (a): Ways to select 4 computers out of 15, we make use of Combination formula as follows;

^nC_r = \frac{n!}{(n-r)!r!}

Where n = 15\ and\ r = 4

^{15}C_4 = \frac{15!}{(15-4)!4!}

^{15}C_4 = \frac{15!}{11!4!}

^{15}C_4 = \frac{15 * 14 * 13 * 12 * 11!}{11! * 4 * 3 * 2 * 1}

^{15}C_4 = \frac{15 * 14 * 13 * 12}{4 * 3 * 2 * 1}

^{15}C_4 = \frac{32760}{24}

^{15}C_4 = 1365

<em>Hence, there are 1365 ways </em>

Solving (b): The probability that exactly 1 will be defective (from the selected 4)

First, we calculate the probability of a PC being defective (p) and probability of a PC not being defective (q)

<em>From the given parameters; 3 out of 15 is detective;</em>

So;

p = 3/15

p = 0.2

q = 1 - p

q = 1 - 0.2

q = 0.8

Solving further using binomial;

(p + q)^n = p^n + ^nC_1p^{n-1}q + ^nC_2p^{n-2}q^2 + .....+q^n

Where n = 4

For the probability that exactly 1 out of 4 will be defective, we make use of

Probability =  ^nC_3pq^3

Substitute 4 for n, 0.2 for p and 0.8 for q

Probability =  ^4C_3 * 0.2 * 0.8^3

Probability =  \frac{4!}{3!1!} * 0.2 * 0.8^3

Probability = 4 * 0.2 * 0.8^3

Probability = 0.4096

Solving (c): Probability that at least one is defective;

In probability, opposite probability sums to 1;

Hence;

<em>Probability that at least one is defective + Probability that at none is defective = 1</em>

Probability that none is defective is calculated as thus;

Probability =  q^n

Substitute 4 for n and 0.8 for q

Probability =  0.8^4

Probability = 0.4096

Substitute 0.4096 for Probability that at none is defective

Probability that at least one is defective + 0.4096= 1

Collect Like Terms

Probability = 1 - 0.4096

Probability = 0.5904

8 0
2 years ago
Which of the given original work is protected by the copyright law?
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Explanation: please provide answer choices for an accurate answer

6 0
3 years ago
Write method reverseString, which takes a string str and returns a new string with the characters in str in reverse order. For e
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Answer:

The method written in Java is as follows:

public static String reverseString(String str){

    String result = "";

    int lentt = str.length();

    char[] strArray = str.toCharArray();

       for (int i = lentt - 1; i >= 0; i--)

           result+=strArray[i];

    return result;

}

Explanation:

This defines the method

public static String reverseString(String str){

This initializes the result of the reversed string to an empty string

    String result = "";

This calculates the length of the string

    int lentt = str.length();

This converts the string to a char array

    char[] strArray = str.toCharArray();

This iterates through the char array

       for (int i = lentt - 1; i >= 0; i--)

This gets the reversed string

           result+=strArray[i];

This returns the reversed string            

    return result;

}

<em>See attachment for full program that includes the main method</em>

Download txt
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It basically comes down to what programming language you want to learn.
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