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Chapter 12: Q3. (page 793)
Choose the word or term that best completes the sentence.
The sum of probabilities of complements equals .
The term “1” completes the given sentence.
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Determine the probability of each event if you randomly select a cube from a bag containing 6 red cubes, 4 yellow cubes, 3 blue cubes, and 1 green cube.
P(white)
Find each product.
Identify each sample as biased or unbiased. Explain your reasoning.
An amusement park is deciding which rides to replace next year. As they leave the park, they ask teens what their least favorite ride is.
To ensure that all of the chocolate bars are the appropriate weight, every 50th bar on the conveyor belt in the candy factory is removed and weighed. Is the sample simple, stratified, or systematic.
To predict whether or not an issue on a ballot will pass or fail, a committee randomly calls 250 houses with area codes that are inside the voting district and asks the opinions of registered voters. Based on these efforts, the committee determines that of the voting population supports the issue. The committee concludes that the issue will pass.
a. Identify the sample.
b. Describe the population.
c. What method of data collection did the committee use: survey, experiment, or observational survey? Explain.
d. Is the sample biased or unbiased. Explain.
e. If unbiased, classify the same as simple, stratified, or systematic. Explain.
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