For the commuter problem above, find the mean and standard deviation using the formulas for the Binomial Distribution. Round your answer to the tenth place, if needed. Mean: Standard Deviation:

Thirty-eight percent (38%) of people living in the U.S. have type O+ blood. If 3 people living in the U.S. are selected at random, what is the probability at least one has type O+ blood? Round all answers to the nearest whole percent, as applicable. Step 1: True or False: The complement of this event is that none of the 3 have type O+ blood. Step 2: What is the probability that 1 randomly selected person does NOT have O+ blood? % Step 3: The probability that we randomly select 3 people that do NOT have O+ blood would be: % Step 4: Therefore, the probability at least one of the 3 randomly select people had O+ blook is: %

Let x be the battery pack type purchased by a customer last weekend. Create the probability distribution for x . Enter the values for P ( x ) as decimals 0.___ rounded to the hundredths place (so two digits past decimal). x P ( x ) 2 4 6 8

Academic Integrity (10 points)

How many 9 player batting orders are possible for a baseball team with 15 players?

A car manufacturing factory produces 320 vehicles per day between two models: the Regressa and the Devion. During quality control inspections, each vehicle is found to have at least one defect. The factory tracks whether each vehicle has no more than 5 defects or more than 5 defects. The results from one production day are shown in the table below. 2.1 Problem 7.png If a randomly selected vehicle is known to be a Regressa, what is the probability that it has more than 5 defects?

Consider a family with three children and the birth gender of each child is being studied. Let x be the number of girls in the family. The probability distribution for this situation is given below. 2.3 Problem 3.png We can expect for the number of girls in a family with children to be , with a standard deviation of . Round your answers to the tenths place.

The director of Movies at the Park must select 4 movies from a total of 10 movies to show on Movie Night at the Park. The movies will all play at the same time on four different screens, so order doesn’t necessarily matter. How many different ways can the selections be made?

Exam 2 Formula Chart.pdf

Three-year-old Sam gets a lot of satisfaction out of scolding Gill, his pretend friend and imaginary playmate. Sam is in Piaget’s __________ stage of cognitive development.