Chapter 12: Q23. (page 744)
Describe a real-world example of an observational study.
Short Answer
A jeans company observing the color of jeans most people choose.
Chapter 12: Q23. (page 744)
Describe a real-world example of an observational study.
A jeans company observing the color of jeans most people choose.
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Get started for freeEvaluate each expression.
Find the mean absolute deviation to the nearest tenth.
A fast food company polled a random sample of its customers to find how many times a month they eat out: 10, 3, 12, 15, 7, 8, 4, 12, 9, 14, 12. Find the mean absolute deviation of the data set to the nearest tenth.
Which measure of central tendency best represents the data? Justify your answer. Then find the measure.
Jason conducts a survey about the number of pets his friends have. He wants to best represent the number of pets: 0, 2, 1, 2, 4, 0, 2, 3, 1, 2, 1, 2, 3, 2, 4, 3, 10.
Identify the sample, and suggest a population from which it was selected. Then classify the sample as simple, stratified, or systematic. Explain your reasoning.
A nostalgia television network wants to conduct a cartoon marathon. To choose the episodes, they mail a questionnaire to people selected at random throughout the country.
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(red)
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