Using <em>statistical concepts</em>, it is found that the standard deviation of the probability distribution is of
When a constant is multiplied to each data in a variable, both the <u>mean and the standard deviation</u> are multiplied by the constant.
In this problem, the standard deviation, which is the square root of the variance, is of:
The price of each is of $1.5, hence:
A similar problem is given at brainly.com/question/25718546