Stats
5th Edition
ISBN: 9780135163825
Author: De Veaux, Richard D., Velleman, Paul F., BOCK, David E.
Publisher: Pearson,
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Chapter 13.4, Problem 3JC
a.
To determine
Construct a
b.
To determine
Compute the probability that a randomly selected sample page with an equation and also had a data display.
c.
To determine
Check whether the events having an equation and having a data display are disjoint events.
d.
To determine
Check whether the events having an equation and having a data display are independent events.
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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
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(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
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(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 13 Solutions
Stats
Ch. 13.1 - 1. Back in Chapter 1, we suggested that you sample...Ch. 13.3 - JUST CHECKING
4. The American Association for...Ch. 13.4 - JUST CHECKING
5. Remember our sample of pages in...Ch. 13 - Prob. 1ECh. 13 - Cooking and shopping Forty-five percent of...Ch. 13 - Sports What is the probability that a person likes...Ch. 13 - Sports again From Exercise 3, if someone doesn’t...Ch. 13 - Late to the train A student figures that he has a...Ch. 13 - Field goals A nervous kicker usually makes 70% of...Ch. 13 - Titanic On the Titanic, the probability of...
Ch. 13 - Births If the sex of a child is independent of all...Ch. 13 - Facebook Facebook reports that 70% of its users...Ch. 13 - Online banking A national survey indicated that...Ch. 13 - Facebook again Suppose that the information in...Ch. 13 - Online banking again Suppose that the information...Ch. 13 - Facebook final Given the probabilities in Exercise...Ch. 13 - Online banking last time Given the probabilities...Ch. 13 - Phones Recent research suggests that 73% of...Ch. 13 - Travel Suppose the probability that a U.S....Ch. 13 - Amenities A check of dorm rooms on a large college...Ch. 13 - Workers Employment data at a large company reveal...Ch. 13 - Global survey The marketing research organization...Ch. 13 - Birth order A survey of students in a large...Ch. 13 - 21. Cards You draw a card at random front a...Ch. 13 - Pets In its monthly report, the local animal...Ch. 13 - 59. Health The probabilities that an adult...Ch. 13 - 60. Immigration The table shows the political...Ch. 13 - 25. Global survey, take 2 Look again at the table...Ch. 13 - 26. Birth order, take 2 Look again at the data...Ch. 13 - Sick kids Seventy percent of kids who visit a...Ch. 13 - Sick cars Twenty percent of cars that are...Ch. 13 - 29. Cards You are dealt a hand of three cards, one...Ch. 13 - 30. Another hand You pick three cards at random...Ch. 13 - 63. Batteries A junk box in your room contains a...Ch. 13 - 64. Shirts The soccer team’s shirts have arrived...Ch. 13 - 65. Eligibility A university requires its biology...Ch. 13 - 66. Benefits Fifty-six percent of all American...Ch. 13 - 35. Cell phones in the home A survey found that...Ch. 13 - Prob. 36ECh. 13 - Prob. 37ECh. 13 - Prob. 38ECh. 13 - Prob. 39ECh. 13 - 40. Birth order, finis In Exercises 20 and 26, we...Ch. 13 - Prob. 41ECh. 13 - Prob. 42ECh. 13 - Prob. 43ECh. 13 - Prob. 44ECh. 13 - Prob. 45ECh. 13 - Prob. 46ECh. 13 - Prob. 47ECh. 13 - Prob. 48ECh. 13 - Prob. 49ECh. 13 - Prob. 50ECh. 13 - Prob. 51ECh. 13 - Prob. 52ECh. 13 - Prob. 53ECh. 13 - Prob. 54ECh. 13 - Prob. 55ECh. 13 - 82. No-shows An airline offers discounted...Ch. 13 - Prob. 57ECh. 13 - Prob. 58ECh. 13 - Prob. 59E
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