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Chapter 12: Q27. (page 745)
A pair of \(25 jeans is on sale for 15% off. What is the sale price?
F. \)21.25
G. \(24.25
H. \)23.25
I. $22.25
Option Fis correct. The sale price is $21.25.
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The results of a simulation of coin flipping are shown.
Outcome | Frequency |
heads | 25 |
tails | 75 |
What is the experimental probability of tails?
MULTIPLE CHOICE On a multiple-choice test with four choices, Zack answered 12 out of 20 questions correctly. What could be used to simulate his correctly answering a question. What could be used to simulate his correctly answering a question?
tossing a coin
rolling a six-sided number cube
spinning a spinner with four equal sections
rolling a three-sided number cube
To determine whether voters support a new trade agreement, 5 people from the list of registered voters in each state and in the District of Columbia are selected at random. Is the sample biased or unbiased?
Identify each sample, and suggest a population from which it was selected. Then classify the type of data collection used.
Federico is trying to decide on a theme and a color scheme for his party. He sends a survey in each invitation, asking guests for their opinions.
Identify each sample, and suggest a population from which it was selected. Then classify the type of data collection used.
FLOWERS A nursery is sending out questionnaires to determine which flowers people like best. They send the questionnaires out to all people over 50 on their mailing list.
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