It is discrete because the sum of the prob is 1 and each prob is between 0 and 1 inclusive. The mean is 1.518 activities as the number of experiments increases, the mean of the observations will approach the mean of the random variable. The standard deviation is__________________? What is the probability that a randomly selected student has a parent involved in three activities? The probability is ______________. What is the probability that a randomly selected student has a parent involved in three or four activities?
Chapter 6 question 10.
Hello, Can you help me solve the last portions of this last problem in this chapter?
In the following probability distribution, the random variable x represents the number of activities a parent of a 6th to 8th grade student is involved in, complete a through f below.
x = 0 1 2 3 4
P(x)= 0.228 0.381 0.101 0.225 0.065
It is discrete because the sum of the prob is 1 and each prob is between 0 and 1 inclusive.
The mean is 1.518 activities
as the number of experiments increases, the mean of the observations will approach the mean of the random variable.
The standard deviation is__________________?
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