5. Of 150 workers surveyed in an industrial A-3community, 65 worked in the paper mill and30 worked in the water-treatment plant.a) What is the probability that a workersurveyed at random worksi) in either the paper mill or the water-treatment plant?ii) somewhere other than the paper millor the water-treatment plant?b) What assumptions must you make inpart a)?

The concept of independence and mutually exclusive events are two important part of probability.

Answered: a) What is the probability that a…

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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B) What is the probability that daily production is more than 27.3 liters?
John travels to school each day either by bicycle, by bus, or by car. The probability that he travels by bus on any day is 0.4. The probability that he travels by bicycle on any day is 0.3. Report your answers with 2 decimal places. a) Find the probability that John travels by bicycle on Monday and Tuesday. a) Find the probability that John travels by bicycle on Monday and by bus on Tuesday. a) Find the probability that John travels by the same method on Monday and Tuesday.
The following table gives data on the marital status of women aged 25 to 29. These proportions tell us the probability of the marital status of a randomly selected woman. Marital Status Never Married Married Widowed Divorced Proportion ??? 0.494 0.005 0.046 1) What percentage of women aged 25 to 29 have never been married? 2) What is the probability that a randomly chosen woman is not currently married?
The bottom panel of figure 1 (p. 311) shows the probability histogram for the total number of spots when a pair of dice are rolled. (a) The chance that the total number of spots will be between 7 and 10 (inclusive) equals the area under the histogram between ___and ___ (b) The chance that the total number of spots will be 7 equals the area under the histogram between ___ and ____
A recent study gave the information shown in the table about ages of children receiving toys. The percentages represent all toys sold. What is the probability that a toy is purchased for someone in the following age ranges? (Enter your answers as a percent.) a) 6 years old or older, b) 12 years or younger, c) between 6 and 12 years old, d) between 3 and 9 years old, e) A child between 10 and 12 years old looks at this probability distribution and asks, "Why are people more likely to buy toys for kids older than I am (13 and over) than for kids in my age group (10–12)?" How would you respond?

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a) What is the probability that a worker surveyed at random works i) in either the paper mill or the water- treatment plant? ii) somewhere other than the paper mill or the water-treatment plant?