Are you more likely to win a random drawing if you crinkle the paper that contains your name before putting it into the drawing box? A curious student conducted a study to investigate. The student took 100 equal sized slips of paper and crinkled 25 of them before putting them all into a box. After mixing well, they asked an uninformed person to select a winner at random.  The student noted if the slip was crinkled. The slip was returned to the box, mixed well, and asked another uninformed person to select a winner at random.  This process was repeated 10 times. Let Y = the number of times that a crinkled paper was selected. a. Does this setting represent a binomial distribution? Explain. b. Use technology to make a histogram of the probability distribution of Y. Describe its shape. c. Calculate and interpret the mean of Y. d. Calculate and interpret the standard deviation of Y.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 11CYU
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Are you more likely to win a random drawing if you crinkle the paper that contains your name before putting it into the drawing box? A curious student conducted a study to investigate. The student took 100 equal sized slips of paper and crinkled 25 of them before putting them all into a box. After mixing well, they asked an uninformed person to select a winner at random.  The student noted if the slip was crinkled. The slip was returned to the box, mixed well, and asked another uninformed person to select a winner at random.  This process was repeated 10 times. Let Y = the number of times that a crinkled paper was selected.

a. Does this setting represent a binomial distribution? Explain.
b. Use technology to make a histogram of the probability distribution of Y. Describe its shape. c. Calculate and interpret the mean of Y.
d. Calculate and interpret the standard deviation of Y. 
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