Find the mean of the binomial random variable. Round to two decimal places when necessary.
-The probability that a person has immunity to a particular disease is 0.3. Find the mean for the random variable X, the number who have immunity in samples of size
A)24. 12
B)0.3
C)16.8
D)7.2

Question

Find the mean of the binomial random variable. Round to two decimal places when necessary.
-The probability that a person has immunity to a particular disease is 0.3. Find the mean for the random variable X, the number who have immunity in samples of size 
A)24. 12
B)0.3
C)16.8
D)7.2

Quizplus · Accepted Answer

The mean of a binomial random variable is calculated using the formula: mean = n * p, where n is the sample size and p is the probability of success. Here, n = 24 and p = 0.3, so the mean is 24 * 0.3 = 7.2.

Find the Mean of the Binomial Random Variable