The probability distribution below shows the likelihood that people were absent 0, 1, 2, 3, 4, or 5 days last month. The number of Days Absent Probability 0 0.60 1 0.20 2 0.12 3 0.04 4 0.04 5 0.00

Based on this information, what is the mean number of days absent?

the mean number of days absent is 0.72 days (since 0.72 is not an integer, we can say that is the average number of days absent is close to 1 day)

Step-by-step explanation:

given a random variable X = number of days absent, the mean is calculated as:

mean = ∑ x * p (x), for all the x possible

where x = number of days absent and p (x) the probability of "x" number of days absent

therefore

mean = 0 * 0.60 + 1 * 0.20 + 2*0.12 + 3*0.04 + 4 * 0.04 + 5 * 0.00 = 0.72 days