What I Can DoThis time, it is your turn to shine. Answer the problem below.The households of a locai community were surveved about the number oi occupantswho are working. It was found out that 25 households have one occupant working,15 have two occupants working, 12 have three occupants working, and 5 have fouroccupants working. Let X be the number of occupants working from a randornlyselected household. What are the possible values for the random variable?

Random variable : A random variable is a mathematical representation of a number or object that is…

Answered: What I Can Do This time, it is your…

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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In a memory test, the test subjects are given a large number and are asked to memorize it. Historical records show that 80% of test subjects pass the test. To pass the test, a subject must exactly repeat all the digits in the number after two hours. A random sample of 625 people to take the memory test is going to be chosen. Let p be the proportion of people in the sample who pass the test. Answer the following. (If necessary, consult a list of formulas.) (a) Find the mean of P. 0 (b) Find the standard deviation of p. 0 (c) Compute an approximation for P(P >0.84), which is the probability that more than 84% of the people in the sample pass the test. Round your answer to four decimal places. 0 X
Assume that the box contains 5 balls: 2 yellow, 1 white, and 2 green. Balls are drawn in succession without replacement, and their colors are noted until both a yellow and a white ball have been drawn. 1. Which of the following is not a valid outcome for this experiment? A. WGY B. GGWY C. YGYW D. YWG 2. How many outcomes are there in the sample space?
A researcher is comparing the effectiveness of three devices designed to help people who snore. There are 210 people who snore participating in the experiment. Using a table of random digits starting from the first row and column, the researcher will randomly place the participants into three equally sized treatment groups suitable for comparison. Which number range would be needed to label the subjects correctly? O 0-2 O 1-3 O 000-210 O 001-210
The University of Chicago's General Social Survey (GSS) is the nation's most important social science sample survey. For reasons known only to social scientists, the GSS regularly asks a random sample of people their astrological sign. Here are the counts of responses from a recent GSS of 4344 people: Sign Aries Taurus Count 321 360 Sign Libra Scorpio Count 392 329 Gemini 367 Sagittarius 331 Cancer 374 Capricorn 354 Leo 383 Aquarius 376 Virgo 402 Pisces 355 We want to test Ho: All 12 astrological signs are equally likely versus Ha: All 12 astrological signs are not equally likely. Use a chi-square goodness-of-fit test to compute a test statistic and P-value. Do these data provide convincing evidence at the 1% significance level that all 12 signs are not equally likely? Because the P-value of 0.6562 > 0.05, we cannot reject the null hypothesis. We cannot conclude that all 12 signs are not equally likely. Because the P-value of 0.0487 > 0.01, we cannot reject the null hypothesis. We…
Assume that 900 births are randomly selected and 443 of the births are girls. Use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high.
A surveyor wants to sample a city for the local Public Health Office in order to assess asthma rates annually. In order to get the best estimate for the project, the surveyor first decides to sample 2 of 15 census tracts, and then to sample 5 households from each tract. Assume there are only 10 households in each tract. The surveyor randomly assigns each tract in the city a number 01-15, and each household in each tract a number 01-10. Use the following random number table to select each tract, and then each household, continuing along the line. 058791 211403 098746 170528 086401 370614 097810 036418 340514 A) What kind of sampling strategy is this? B) Which census tracts and households will be selected?
A social scientist wishes to conduct a survey. She plans to ask a yes/no question to a random sample from the U.S. adult population. One proposal is to select 100 people; another proposal is to select 900 people. Which of the following is true regarding the sample proportion ô of "yes" responses? A. O The sample proportion from the sample of 900 is more likely to be close to the true population proportion, p. B. The sample proportion from sample of 100 is more likely to be close to the true population proportion, p. C. The sample proportion in either proposal is equally likely to be close to the true population proportion, p, since the sampling is random.
Students at Hereford High School want to investigate whether they have more school spirit than students at Blake High School. To test this hypothesis, the students will select a random sample of students from each school and determine the proportion of the sampled students who wear school colors to their respective pep rallies. Let pHpH represent the proportion of Hereford students who wear school colors to their pep rally and pBpB represent the proportion of Blake students who wear school colors to their pep rally. Which of the following are the correct null and alternative hypotheses for the investigation? H0:pH−pB=0Ha:pH−pB≠0H0:pH−pB=0Ha:pH−pB≠0 A H0:pH−pB=0Ha:pH−pB>0H0:pH−pB=0Ha:pH−pB>0 B H0:pH−pB=0Ha:pH−pB<0H0:pH−pB=0Ha:pH−pB<0 C H0:pH−pB>0Ha:pH−pB=0H0:pH−pB>0Ha:pH−pB=0 D H0:pH−pB<0Ha:pH−pB=0
Clarkson university surveyed alumni to learn more about what they think of Clarkson.one part of the survey asked respondents to indicate whether their overall experience atClarkson fellshort of expectations, met expectations, orsurpassed expectations. The resultsshowed that 4% of the respondents did not provide a response, 26% said that their experience fell short of expectations, and 65% of the respondents said that their experience metexpectations.a. If we chose an alumnus at random, what is the probability that the alumnus would saytheir experience surpassed expectations?b. If we chose an alumnus at random, what is the probability that the alumnus would saytheir experience met or surpassed expectations?
Please explain . Thank you.
. A sample of 200 people was asked their favorite genre of music. Below are the results. Gender Rock Pop Hip-Hop Other Male 31 20 37 12 Female 17 30 19 34 If one of those people is randomly selected, find the probability that the person is a female or their favorite genre of music is Hip-hop. Round to three decimal places as needed. If one of those people is random selected, find the probability that the person’s favorite genre of music is Pop, given that the person is a male. Round to three decimal places as needed.
Refer to the following scenario. A government official is in charge of allocating social programs throughout the city of Vancouver. He will decide where these social outreach programs should be located based on the percentage of residents living below the poverty line in each region of the city. He takes a simple random sample of 123 people living in Gastown and finds that 24 have an annual income that is below the poverty line. For each of the following statements, specify whether the statement is a correct interpretation of the 95% confidence interval for the true proportion of Gastown residents living below the poverty line. A. 19.51% (24/123) of Gastown residents are living below the poverty line. ? + B. There is a 95% probability that the true proportion of Gastown residents who are living below the poverty line equals 24/123. ? + C. If another random sample of 123 Gastown residents is drawn, there is a 95% probability that the sample proportion of Gastown residents who are living…

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