Question

Number of Tails 0 1 2 3 Probability 1 8 3 8 3 8 1 8 23 Select the correct answer. What is the expected number of cars sold in one week? A. 1 B. 1.5 C. 2 D. 2.5

Answer 1

To calculate the expected number of cars sold in one week, we need to multiply each number of tails by its corresponding probability, then sum up the results.

Number of Tails: 0, 1, 2, 3

Probability: 1/8, 3/8, 3/8, 1/8

Expected Number of Cars Sold = (0 * 1/8) + (1 * 3/8) + (2 * 3/8) + (3 * 1/8)

= 0 + 3/8 + 6/8 + 3/8

= 12/8

= 1.5

Therefore, the expected number of cars sold in one week is 1.5.

The correct answer is B. 1.5.

Explanation: