AP Statistics

You play tennis regular with a friend, and from past experience, you believe that the outcome of each match is independent. For any given match you have a probability of 0.6 of winning. The probability that you win the next two matches is

• 0.16

• 0.36

• 0.4

• 0.6

There are 10 red marbles and 8 green marbles in a jar. If you take three marbles from the jar (without replacement), the probability that they are all red is: 

• 0.069

• 0.088

• 0.147

• 0.171

A recent study of 200 nurses found that of 125 female nurses, 56 had bachelor's degrees:  and of 75 male nurses, 34 had bachelor's degrees.  If a nurse is selected at random, find the probability that the nurse is a female or has a bachelor degree.

• 159/200

• 125/200

• 215/200

• 90/200

A store sells shirts that are either small, medium, or large. The colors are either red, blue, green, or white. What is the probability someone will select a large green shirt?

• 1/3

• 1/7

• 1/9

• 1/12

Which of the graphs would have a correlation coefficient of r = 0.69 ?

• 
• 
• 
• 

Farmer Joe's apple tree farm is set up in 100 rows.  He counts the number of apples produced on every 10th row to estimate the number apples produced on the whole farm.  This is _____________ random sampling.  

• Simple

• Stratified

• Cluster

• Systematic

To determine if a data point is an outlier in a skewed distribution, use the 1.5 x IQR rule. This means that a value is

• Too high if Q3 + 1.5(IQR)

  Too low if Q1 - 1.5(IQR)

• Outlier if greater than 1.5 times the IQR

• Outlier if less than 1.5 times the IQR

• Too low if Q3 - 1.5(IQR)

  Too high if Q1 + 1.5(IQR)

What type of correlation describes the following sentence:
The temperature outside and the number of hot chocolate sold at a football game.

• postive

• negative 

• no

Suppose we toss a penny and a nickel. Let A be the event that the penny is a head and B be the event that the nickel is a tail. 
The events A and B are

• Disjoint

• complements

• independent

• dependent

To test a claim about a mean, when the population standard deviation is unknown we use:

• z procedures

• Pythagorean Theorem

• t procedures

• np > 10 and n(1-p) > 10