The theoretical probability of drawing a red card from a deck of cards is 1:2. Michael drew 20 cards and received 7 red and 13 black. What is the best explanation for this result?

A.
More cards needed to be drawn.
B.
Theoretical results are correct, regardless of how many many cards are drawn.
C.
Two decks of cards should be used.
D.
Simulations do not always produce theoretical results.

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