A survey of 2,150 adults reported that 55% watch news videos. Complete parts (a) through (c) below.Suppose that you take a sample of 100 adults. If the population proportion of adults who watch news videos is 0.55, what is the probabilitythat fewer than half in your sample will watch news videos?a.The probability is that fewer than half of the adults in the sample will watch news videos.(Round to four decimal places as needed.)b. Suppose that you take a sample of 500 adults. If the population proportion of adults who watch news videos is 0.55, what is the probabilitythat fewer than half in your sample will watch news videos?The probability is that fewer than half of the adults in the sample will watch news videos.(Round to four decimal places as needed.)

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Answered: A survey of 2,150 adults reported that…

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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The table lists the smoking habits of a group of college students. Sex Non-smoker Regular Smoker Heavy Smoker Total Man 135 70 210 Woman 187 21. 14 222 Total 322 91 19 432 If a student is chosen at random, find the probability of getting someone who is a man or a non-smoker. Round your answer to three decimal places. O A. 0.789 O B. 0.950 O C. 0.919 O D. 0.942
3. Data collected from a website show that 60% of visitors use Scavenger as their web browser. You randomly select 100 visitors from the website. What is the probability that at most 55 of the visitors use Scavenger? Round your answer to the nearest tenth of a percent. Answer choices: 91.7% 60.0% 55.0% 17.9%
A. A recent study found that 2% of Americans admitted they had driven while intoxicated in the prior month. If a problem asks you to find the probability that 200 or fewer people in a population of 10,000 drive under the influence of alcohol, how do you solve the problem after finding the probability in the z-table? A. Subtract one from the probability you find in the z-score tables B. The probability that equates to the z-score is the answer C. Tis problem cannot be answered with the z-tables D. Take the probability you find in the z-score tables and subtract from one
A marketing company has randomly surveyed 204 men who watch professional sports. The men were separated according to their educational level (college degree or not) and whether they preferred the NBA or the National Football League (NFL). The results of the survey are shown to the right. Complete parts a through d. Sports Preference NBA College Degree 36 No College O Degree 58 NFL 19 91 a. What is the probability that a randomly selected survey participant prefers the NFL? (Round to four decimal places as needed.) b. What is the probability that a randomly selected survey participant has a college degree and prefers the NBA? (Round to four decimal places as needed.) c. Suppose a survey participant is randomly selected and you are told that he has a college degree. What is the probability that this man prefers the NFL? (Round to four decimal places as needed.) d. Is a survey participant's preference for the NBA independent of having a college degree? No. The two events are not…
Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is 0.4 . A sample of 41 U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places Find the probability that more than 44% of the people in this sample have high blood pressure. The probability that more than 44% of the people in this sample have high blood pressure is .
Answer Part C only.
Answer.
1. Use this table for the following questions: Female Male TotalShort Hair 20 40 60 Long Hair 30 10 40 Total 50 50 100 a. Complete a total probability table.b. Complete a row probability tablec. Complete a column probability table.d. The probability that a student does not have long hair. _________e. The probability that a student is male or has short hair. ________f. The probability that a student is a female and has long hair. _________g. The probability that a student is male, given that the student has long hair. _________h. The probability that a student has long hair, given that the student is male. _________i. Of all the female students, the probability that a student has short hair. ________j. Of all students with long hair, the probability that a student is female. _________k. The probability that a student is female or has long hair.…
a. The population Proportion p=? b. The sample proportion is? c.Find the standard error?
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According to a 2009 Reader's Digest article, people throw away about 9% of what they buy at the grocery store. Assume this is the true proportion and you plan to randomly survey 180 grocery shoppers to investigate their behavior. What is the probability that the sample proportion does not exceed 0.15? (Enter your answer as a number accurate to 4 decimal places.) Answer =
A population proportion is 0.58. Suppose a random sample of 658 items is sampled randomly from this population. what is the probability that the sample proportion is between 0.53 and 0.56? What is the probability that the sample proportion is less than 0.49?

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