Statistics: Informed Decisions Using Data (4th Edition)

Published by Pearson
ISBN 10: 0321757270
ISBN 13: 978-0-32175-727-2

Chapter 6 - Section 6.2 - Assess Your Understanding - Applying the Concepts - Page 344: 35e

Answer

$P(8 \leq x \leq 10)$ $= 0.16$ Interpretation: The probability that at 8 to 10 (inclusive) flights are on time is 0.16. If we carry out 100 trials of this experiment, we expect that approximately 16 trials will result in 8 to 10 (inclusive) flights being on time.

Work Step by Step

$P(8 \leq x \leq 10)$ $ = P(x = 8) + P(x=9) + P(x = 10)$ $= 0.0138 + 0.0430 + 0.1032$ $= 0.16$ Interpretation: The probability that at 8 to 10 (inclusive) flights are on time is 0.16. If we carry out 100 trials of this experiment, we expect that approximately 16 trials will result in 8 to 10 (inclusive) flights being on time.
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