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Chapter 12: Q4. (page 797)
Evaluate each expression.
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When air is pumped into a ball, the pressure required can be computed by using the formula, where P represents the pressure in pound per square inch (psi), and r is the radius of the ball in inches.
a. Simplify the complex fraction.
b. Suppose the air pressure inside the ball is 8 psi. Approximate the radius of the ball to the nearest hundredth.
Identify each sample as biased or unbiased. Explain your reasoning.
A magazine publisher asks every tenth person at a fitness expo what magazines they have in their household.
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)
Write an expression that describes the area in square units of a triangle with a height of and a base of .
Identify each sample, and determine a population from which it was selected. Then classify the type of data collection used.
A travel agency asks each of its customers for the past two years about their favorite and least favorite destinations.
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