Elementary Statistics (13th Edition)
13th Edition
ISBN: 9780134462455
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 5, Problem 2CRE
South Carolina Pick 3 In South Carolina’s Pick 3 lottery game, you can pay $1 to select a sequence of three digits, such as 227. If you buy only one ticket and win, your prize is $500 and your net gain is $499.
a. If you buy one ticket, what is the
b. If you play this game once every day, find the
c. If you play this game once every day, find the probability of winning exactly once in 365 days.
d. Find the
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The U.S. Postal Service will ship a Priority Mail® Large Flat Rate Box (12" 3 12" 3 5½") any
where in the United States for a fixed price, regardless of weight. The weights (ounces) of 20 ran
domly chosen boxes are shown below. (a) Make a stem-and-leaf diagram. (b) Make a histogram.
(c) Describe the shape of the distribution. Weights
72 86 28 67 64 65 45 86 31 32
39 92 90 91 84 62 80 74 63 86
(a) What is a bimodal histogram? (b) Explain the difference between left-skewed, symmetric, and right-skewed histograms. (c) What is an outlier
(a) Test the hypothesis.
Consider the hypothesis test Ho
=
:
against H₁o < 02. Suppose that the sample sizes aren₁ =
7 and n₂
= 13 and that
$²
= 22.4 and $22
= 28.2. Use α = 0.05.
Ho
is not
✓ rejected.
9-9
IV
(b) Find a 95% confidence interval on of 102. Round your answer to two decimal places (e.g. 98.76).
Chapter 5 Solutions
Elementary Statistics (13th Edition)
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