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...

NOTE: ANSWER ITEMS 5 to 8 only thank you.

Extracted 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