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Assessment 3 Review Problems

Pam plans on surveying students to determine whether it is the sixth-graders or the seventh-graders who participate more in after-school activities. Which of these data collection methods would give her the most representative information?
  1. survey 50 randomly selected students at the seventh-grade dance
  2. survey 30 sixth-grade and 30 seventh-grade students randomly selected from the school
  3. survey 50 randomly selected students studying in the library during the lunch hour
  4. survey the first 50 students who enter the school building on Monday
/ A principal wants to take a survey to determine which type of ice cream is preferred by most of the students at the school. Which of the following methods would give the best representative sample?
  1. pick every 12th student who is listed on the student roster for the school
  2. pick 12 students at random from one class
  3. survey every 12th student who eats in the cafeteria at lunch
  4. survey 12 members of the school band

Ken will flip a fair coin and then randomly choose one of three colored cards. The possible outcomes are shown below.
What is the probability that the coin will land on Tails and that he will choose a blue card?
A. B. C. D. / Lisa has won a bicycle as a prize in a contest. The bicycle is randomly selected from a 3-, 5-, or 10-speed and can be red or green.
What is the probability that the bike Lisa has won will be green?
A. B. C. D.
Silvia wanted a skirt that was discounted 30%. If the skirt was originally $40, what was the sale price?
  1. $12
  2. $18
  3. $28
  4. $52
/ An ice cream company conducts a survey to determine whether buyers prefer chocolate to vanilla. Which sampling method provides the most representative sample of the population?
  1. survey 30 randomly selected ice cream company workers for a month
  2. survey 30 people randomly selected form all people who purchase ice cream
  3. survey every 30th customer who enters a grocery store for a week
  4. survey 30 randomly selected mall customers for a month

Anna is a girl in a math class with a total of 13 girls and 12 boys. If the teacher selects one student at random to go to the board, what is the probability that Anna will be selected?
  1. 4%
  2. 12%
  3. 13%
  4. 52%
/ Which of the following best represents a random sampling of Jones Middle School?
  1. survey 20 girls in a math class
  2. survey 20 students in a seventh-grade homeroom
  3. survey every 6th student who enters the school until a total of 20 sixth-grade students have been selected
  4. survey 20 students whose names were drawn out of a box containing the names of all of the students in the school

Charlie sold a card for the price of $6,700. If he earns 13% of the price, how much will Charlie earn?
A. $515 B. $871 C. $5,400 D. $6,687 / What is 30% of $1,500?
  1. $450
  2. $1,950
  3. $4,500
  4. $8,000

A fair coin is tossed 6 times and lands on tails each time. What is the probability that the coin will land on tails on the next flip?
A. 20% B. 25% C. 50% D. 80% / Jeff left a 12% tip at a restaurant where the bill was $27.42. How much did Jeff leave as a tip?
  1. $1.20
  2. $3.29
  3. $12.00
  4. $15.42

The table below shows the birth months for all 25 students in Mr. Battistini’s class.
Student Birth Months
What is the probability of selecting a student at random from this class who was not born in November?
A. 3% B. 12% C. 22% D. 88% / A cook fixed sack lunches for some hikers. Each lunch had a chicken, ham or turkey sandwich, and either an apple or a cereal bar.
What is the probability that a sack lunch selected at random contains an apple?
A. B. C. D.