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5. What is the standard deviation of the given discrete random variable? a. 3.28 b. 1.36 c. 3.57 d. 1.48 6. Which of the following interpretations represent the result of the problem? a. The mean of a discrete probability distribution is 3.40. It implies that in the long run the average number of computers sold daily in a computer shop during the past several months is 3.40.

5. What is the standard deviation of the given discrete random variable? a. 3.28 b. 1.36 c. 3.57 d. 1.48 6. Which of the following interpretations represent the result of the problem? a. The mean of a discrete probability distribution is 3.40. It implies that in the long run the average number of computers sold daily in a computer shop during the past several months is 3.40.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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NOTE: ANSWER ITEMS 5 to 8 only thank you.
For numbers 2 - 8 The following data show the probability distribution of the number of computers sold daily in a computer shop during the past several months. Probability P(X) 0.05 Number of Computers X 1 0.10 2 0.15 3 0.20 4 0.25 0.25 2. Find the mean of the discrete random variable. а. 3.30 b. 3.25 с. 3.40 d. 3.45 3. What is the value of EX² * P(X)? a. 10.75 b. 1.86 с. 12.75 d. 2.19 4. What is the variance of the given discrete random variable? a. 10.75 b. 1.86 с. 12.75 d. 2.19 5. What is the standard deviation of the given discrete random variable? а. 3.28 b. 1.36 c. 3.57 d. 1.48 6. Which of the following interpretations represent the result of the problem? a. The mean of a discrete probability distribution is 3.40. It implies that in the long run the average number of computers sold daily in a computer shop during the past several months is 3.40. b. The standard deviation of the discrete probability distribution is 1.48. This implies that on the average, number of computers sold daily in a computer shop during the past several months is 1.48 from the mean. c. The mean of a discrete probability distribution is 3.30. It implies that in the long run the average number of computers sold daily in a computer shop during the past several months is 3.30. d. The standard deviation of the discrete probability distribution is 1.36. This implies that on the average, number of computers sold daily in a computer shop during the past several months is 1.36 from the mean. 7. What is the probability that on a given day exactly 3 computers will be sold? a. 0.20 b. 0.70 0.50 d. 0.30 8. What is the probability that on a given day at most 2 computers will be sold? a. 0.85 b. 0.70 c. 0.15 d. 0.30
Transcribed Image Text:For numbers 2 - 8 The following data show the probability distribution of the number of computers sold daily in a computer shop during the past several months. Probability P(X) 0.05 Number of Computers X 1 0.10 2 0.15 3 0.20 4 0.25 0.25 2. Find the mean of the discrete random variable. а. 3.30 b. 3.25 с. 3.40 d. 3.45 3. What is the value of EX² * P(X)? a. 10.75 b. 1.86 с. 12.75 d. 2.19 4. What is the variance of the given discrete random variable? a. 10.75 b. 1.86 с. 12.75 d. 2.19 5. What is the standard deviation of the given discrete random variable? а. 3.28 b. 1.36 c. 3.57 d. 1.48 6. Which of the following interpretations represent the result of the problem? a. The mean of a discrete probability distribution is 3.40. It implies that in the long run the average number of computers sold daily in a computer shop during the past several months is 3.40. b. The standard deviation of the discrete probability distribution is 1.48. This implies that on the average, number of computers sold daily in a computer shop during the past several months is 1.48 from the mean. c. The mean of a discrete probability distribution is 3.30. It implies that in the long run the average number of computers sold daily in a computer shop during the past several months is 3.30. d. The standard deviation of the discrete probability distribution is 1.36. This implies that on the average, number of computers sold daily in a computer shop during the past several months is 1.36 from the mean. 7. What is the probability that on a given day exactly 3 computers will be sold? a. 0.20 b. 0.70 0.50 d. 0.30 8. What is the probability that on a given day at most 2 computers will be sold? a. 0.85 b. 0.70 c. 0.15 d. 0.30
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