Lesson 2: 1 in 6 Wins: Are Soda Contests True?

Pepsi ran a promo contest for their 20 oz. bottles of soda. Some of the caps said, "Please try again!" while others said, "You're a winner!" Pepsi advertised the promotion with the slogan "1 in 6 wins a prize." Ms. Juarez's statistics class wonders if the company's claim is true. To find out, all 30 students in the class go to the store, and each buys one 20-ounce bottle of the soda. Two of them get caps that say "You're a winner!"

Does this result give convincing evidence that the company's 1-in-6 claim is inaccurate? You and your classmates will perform a simulation to help answer this question.

1. Roll your die 30 times to imitate the process of the students in Ms.Juarez's statistics class buying their sodas. How many of them won a prize?

2. Tell Ms. Juarez the number of prize winners you got in Step 1.

3. Sketch the class dot plot below.

4. What percent of the time did Ms. Juarez's statistics class get two or fewer prizes, just by chance?

5.. Does it seem plausible that the company is telling the truth but that the class just got unlucky? Explain.

Lesson 2 - The Science and Art of Data

Important information:

Application What are my classmates like?

On the first day of a statistics course, the instructor gave all 40 students in the class a survey. The table below shows data from the first 4 students on the class roster.

1. Identify the individuals and variables in this data set. Classify each variable as categorical or quantitative.

2. Here are the ages of the 40 students in the class:

Summarize the age distribution with a frequency table: