Statistics and Probability with Applications

You spin the spinner. Choose 2 events that have the same probability value.

• spinning a number that is a multiple of 2

• spinning a number that is a multiple of 3

• spinning a number higher that 6

• spinning an odd number

Based on the table you completed on #5, which of the following events have a probability that is greater than 0.4? Select all that apply.

(Hints: "OR" implies addition; 0.4 is the same as 0.40)

• Randomly selecting an apple

• Randomly selecting an orange

• Randomly selecting a pear

• Randomly selecting an apple or a pear

• Randomly selecting an orange or pear

You toss two dimes 24 times and record the results. Copy and complete the table to show the experimental probability of each outcome. Then choose the correct answer.

• P(head and head) = 24/4 or 6%

• P(head and tail) = 1/15 or 6.7%

• P(tail and tail) = 5/24 or 20.8%

Suppose you tossed the dimes 120 times. How many times would you expect an outcome of “tail and tail”?

(Show your math work)

• 24

• 5

• 25

• 60

There are 900 students in your school. You ask 150 randomly chosen students how much time they spend doing homework on a typical day. The results are shown. Predict the number of students in your school who, on a typical day, spend an hour? (Show your math work. Use #13 as your guide)

• 36

• 54

• 324

• 2500

Which math work is helpful to solve for the MODE of the scores of Student A?

Copy the correct math work and answer on your paper.

• 
• 
• 
• 

The test scores of two students are shown. Solve for the mean, median, and mode of Student B.

(Use your math work for Student A as your guide)

• I completed the math work on my paper. They are labeled completely.

• I did not show my math work on my paper.

The table shows the number of miles Liz and Sara rode their bikes during five randomly selected days. Which is the best comparative statement about the number of miles each girl rides on a typical day? (Show the needed math work: mean and range of each girl)

• On a typical day, Liz rides farther than Sara because Liz’s mean is greater than Sara’s mean

• On a typical day, Sara rides farther than Liz because Sara’s mean is greater than Liz’s mean.

• On a typical day, Liz rides farther than Sara because Liz’s range is greater than Sara’s range.

• On a typical day, Sara rides farther than Liz because Sara’s range is greater than Liz’s range.

The manager recorded the numbers of bags of potatoes sold at each of two stores over the last month. The box-and-whisker plot shows the summary of the data. Based on the median, which store is selling more potatoes? (Write the median of each store on your paper)

• Store S

• Store V

• The medians of the 2 stores are equal.

Which store has a more varied data? (Show the needed math work) Range = Highest Value − Lowest Value Interquartile Range = Quartile 3 − Quartile 1

• Store V, based on RANGE

• Store S, based on INTERQUARTILE RANGE

• Both stores have equally varied data, based on RANGE

• Both stores have equally varied data, based on INTERQUARTILE RANGE