The manager of a video store has compiled the following table, which
gives the probabilities that a customer
a
will buy 0, 1, 2, 3, or 4 DVDs.
DVDs
0
1
2.
3
4.
Probability
.42
.36
114
.05
.03
What is the expected value for the
purchase of DVDs?

An optical inspection system is used to distinguish among different part types. the probability of a correct classification of any part is 0.92. suppose that three parts are inspected and that the classifications are independent. let the random variable x denote the number of parts that are correctly classified. determine the probability mass function of x. round your answers to four decimal places (e.g. 98.7654). x f(x) 0 1 2 3

Angle xyz is formed by segments xy and yz on the coordinate grid below: a coordinate plane is shown. angle xyz has endpoints at 3 comma negative 1 and 6 negative 2 and 3 comma negative 3 and measures 36.87 degrees. angle xyz is rotated 270 degrees counterclockwise about the origin to form angle x′y′z′. which statement shows the measure of angle x′y′z′?

I’m stuck on this equation, anyone got the answer?