2. In a city 30% of the houses and 60% of the condominiums use natural gas for heating.65% of the residences in the city are houses and the rest are condominiums.a. If a residence is selected at random from this city, what is the probability it uses naturalgas for heating?b. If a residence uses natural gas for heating, what is the probability it is a condominium?

Answered: 2. In a city 30% of the houses and 60%…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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4. Suppose a basketball player is a 73% free-throw shooter and he attempts 10 free throws. a. What is the probability that he makes at least half of the shots? b. What is the probability that he misses exactly 4 of the attempts? c. What is the probability he makes at most 3 shots?
3. A jar contains black and white marbles. Two marbles are chosen without replacement. The probability of selecting a black marble and then a white marble is 0.34, and the probability of selecting a black marble on the first draw is 0.47. What is the probability of selecting a white marble on the second draw, given that the first marble drawn was black?
5. A box contains 200 calculator. 15 of which are defective. 10 calculators selected. find the probability that at least 1 of them is defective.
Suppose 33.3% of high school students eat pizza and 42% drink soda. If 17.3% of high school students eat pizza and drink soda, what is the probability that a randomly chosen high student will either eat pizza, drink soda, or both?
At a local college, 32% of students are enrolled in a statistics course and 45% of students are enrolled in an accounting course. Also, 16% of students are enrolled in both statistics and accounting 1. What is the probability that a randomly selected student is in statistics or accounting. 2. What is the probability that a randomly selected student is in accounting, given that they are in statistics. 3. What is the probability that a randomly selected accounting student is in statistics. 4. What is the probability that a randomly selected student is not in either course.
1. A city has 9 coffee shops: 3 Starbuck's, 2 Caribou Coffees, and 4 Crazy Mocho Coffees. If a person selects one shop at random to buy a cup of coffee, find the probability that it is either a Starbuck's or Crazy Mocho Coffees.
18. A jar contains 10 red marbles and 12 green marbles. You reach in the jar and pull out two marbles at random. What is the probability that both of the marbles chosen are green? Edit View Insert Format Tools Table
One quality characteristic for cabinet manufacturers is easy sliding drawers. A drawer is considered easy sliding if it does not get stuck when opened. His- torically, only 2% of the drawers get stuck. Ten drawers are randomly selected from a new lot. Each drawer is tested and all 10 must be easy sliding before the new lot is shipped. a. Find the probability that the lot will be shipped. b. Find the probability that at least one drawer will get stuck. c. Find the expected number of stuck drawers, the variance, and the standard deviation.
Many people believe that the average number of Facebook friends is 140. The population standard deviation is 39.2. A random sample of 48 high school students in a particular county revealed that the average number of Facebook friends was 153. At (alpha)= 0.10, is there sufficient evidence to conclude that the mean number of friends is greater than 140? A. State the hypotheses and identify the claim. B. Find the critical value. C. Compute the test value. D. Make the decision. E. Summarize the results.
b. A bag contains 33 blueblue marbles, 77 redred marbles, and 66 greengreen marbles. If two different marbles are drawn from the bag , what is the probability of drawing first a blueblue marble and then a greengreen marble?
Pet owners often have more than one type of pet. A recent survey shows that 70% own a dog, 44% own a cat, and 30% own both a dog and cat. Suppose a person is randomly selected. Determine the probability this person 1. has a dog or a cat or both. 2. does not have a dog nor a cat. 3. only has a dog. 4. Given the person has a dog, what is the probability that this person has a cat?
Suppose that 40% of Tulane undergraduates intend to continue on to graduate school after completing their undergraduate degrees. Suppose we randomly select 20 Tulane undergraduates. Find the probability that at least 11 of the students in the sample intend to continue on to graduate school.

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