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Chapter 12: Q8. (page 737)
Find each product.
The product is .
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Which measure of central tendency best represents the data? Justify your answer. Then find the measure.
Sophia keeps track of the ages of students in her class. She wants to best represent the ages of her classmates: 13, 14, 13, 13, 14, 13, 13, 15, 14, 13, 14, 14, 10.
Identify each sample, and suggest a population from which it was selected. Then classify the sample as simple, stratified, or systematic. Explain your reasoning.
The service manager at a car dealership inspects every fifth car to make sure cars are detailed after being serviced.
Identify each sample, and suggest a population from which it was selected. Then classify the type of data collection used.
The city council wants to start a recycling program. They send out a questionnaire to 1000 random citizens asking what they would recycle.
A local cable provider asked its subscribers how many television sets they had in their homes. The results of their survey are shown in the probability distribution.
Number of televisions | probability |
1 | 0.18 |
2 | 0.36 |
3 | 0.34 |
4 | 0.08 |
0.04 |
Show that the distribution is valid.
Identify each sample, and suggest a population from which it was selected. Then classify the sample as simple, stratified, or systematic. Explain your reasoning.
Mitsu uses her blog about art to ask readers about their favorite medium and supply center. She then tabulates and publishes the results.
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