↑ Let C be the cost (in dollars) to buy B boxes of cereal. Identify the independent variable and the dependent variable. Which variable is the independent variable? B, the amount of boxes of cereal bought C, the cost Which variable is the dependent variable? C, the cost B, the amount of boxes of cereal bought To reduce laboratory costs, water samples from three public swimming pools are combined for one test for the presence of bacteria. Further testing is done only if the combined sample tests positive. Based on past results, there is a 0.006 probability of finding bacteria in a public swimming area. Find the probability that a combined sample from three public swimming areas will reveal the presence of bacteria. Is the probability low enough so that further testing of the individual samples is rarely necessary? ... The probability of a positive test result is

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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K
Let C be the cost (in dollars) to buy B boxes of cereal. Identify the independent
variable and the dependent variable.
Which variable is the independent variable?
B, the amount of boxes of cereal bought
C, the cost
Which variable is the dependent variable?
OC, the cost
O B, the amount of boxes of cereal bought
To reduce laboratory costs, water samples from three public swimming pools are
combined for one test for the presence of bacteria. Further testing is done only if
the combined sample tests positive. Based on past results, there is a 0.006
probability of finding bacteria in a public swimming area. Find the probability that
a combined sample from three public swimming areas will reveal the presence of
bacteria. Is the probability low enough so that further testing of the individual
samples is rarely necessary?
The probability of a positive test result is
(Round to three decimal places as needed.)
Transcribed Image Text:K Let C be the cost (in dollars) to buy B boxes of cereal. Identify the independent variable and the dependent variable. Which variable is the independent variable? B, the amount of boxes of cereal bought C, the cost Which variable is the dependent variable? OC, the cost O B, the amount of boxes of cereal bought To reduce laboratory costs, water samples from three public swimming pools are combined for one test for the presence of bacteria. Further testing is done only if the combined sample tests positive. Based on past results, there is a 0.006 probability of finding bacteria in a public swimming area. Find the probability that a combined sample from three public swimming areas will reveal the presence of bacteria. Is the probability low enough so that further testing of the individual samples is rarely necessary? The probability of a positive test result is (Round to three decimal places as needed.)
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