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The Practice of Statistics for AP Examination

Daren Starnes, Josh Tabor

$Math Studyset Vaia Explanations$ Math

6th Edition · 837 pages

ISBN: 9781319113339

Chapter 6: Q. 7. (page 367)

Get on the boat! Refer to Exercise 3. Find the mean of Y. Interpret this value.

Short Answer

Expert verified

$µ = 19.35$

Step by step solution

Step 1. Given information.

Money collected	0	5	10	15	20	25
Probability	0.02	0.05	0.08	0.16	0.27	0.42

Step 2. The mean of Y.

The expected value (or mean) is calculated by multiplying each possibility y by its probability P(Y = y):

$µ = Σ y P (Y = y) = 0 x 0.02 + 5 x 0.05 + 10 x 0.08 + 15 x 0.16 + 20 x 0.27 + 25 x 0.42 µ = 19.35$

The average amount of money collected on a random ferry trip is $19.35.

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Most popular questions from this chapter

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Get on the boat! Refer to Exercise 3. Find the mean of Y. Interpret this value.

Short Answer

Step by step solution

Step 1. Given information.

Step 2. The mean of Y.

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