Mathematics, 10.04.2020 22:36 Bigbabybrudis
300 students in a high school freshman class are surveyed about what kinds of pets they have. Of the 300 students, 200 have a dog, 180 have a cat, and 150 have a cat and a dog. Using this information, answer each of the following questions.
Let D be the event that a randomly selected student has a dog and C be the event that a randomly selected student has a cat.
What is P(D and C), the probability that a student in the class has a dog and a cat?
A) 2/3
B) 3/5
C) 1/2
D) 5/6
Answers: 1
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Which system of linear inequalities is represented by the graph? !
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Which simplifys to a+ b? a-(1-b)+1 -(1-a)-b+1 (a--1) -1)+1
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Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain
Answers: 2
300 students in a high school freshman class are surveyed about what kinds of pets they have. Of the...
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