To gauge how her fellow lawmakersview the proposed “Child Car Seat"Law, 12 randomly selected membersof the house were interviewed. Ten ofthem were supporting the proposedlaw. Is there evidence to say that themajority of the members of thehouse will approve the said proposal?Which of the followingstatements is(are) TRUE? *I. The appropriate alternativehypothesis is the proportion of theO members of the house that willapprove the proposal is less than50%.II. Approximate Z-test can beperformed as a test procedure.O Both I and IIO Neither I nor II

The asserted claim regarding the members supporting the law in terms of proportion is to be tested…

Answered: To gauge how her fellow lawmakers view…

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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(Fill in the blank) Out of 850 people sampled, 595 said that they supported candidate Johnson. The researchers conclude that they are 95% confident that, in the population, the true percentage of people who support candidate Johnson is between 66% and 74%. Use this information to answer the following questions. a) The percentage of people in the sample who support candidate Johnson, called the sample statistic, is %. Answer: b) The margin of error is Answer: c) The confidence interval can be written as %+ Answer for first blank space: Answer for second blank space:
After once again losing a hockey game to the Michigan Tech,the alumini association of NMU conducted a survey to see if alumini were in favour of firing the coach.A simple random sample of 100 alumini from the population of all living alumini was taken .Sixty-four of the alumini in the sample were in favour of firing the coach.Let p represent the proportion of all living alumini who favor firing the coach. what is a 99% confidence interval for p?
A conservative radio talk show host with a large audience is interested in the proportion p ofadults in his listening area who think the drinking age should be lowered to eighteen. To findthis out, he poses the following question to his listeners: “Do you think that the drinking ageshould be reduced to eighteen in light of the fact that eighteen year‐olds are eligible for militaryservice?” He asks listeners to phone in and vote “Yes” if they agree the drinking age should belowered and “No” if not. Of the 100 people who phoned in, 70 answered “Yes.” a. List one source of sampling bias (i.e. bias based on the people included in the sample). b. List another source of bias (sampling or non-sampling).
Suppose 500 people in the sample of 1,007 adults were women. Gallup asked these 500 women. "What is your favorite Summer Olympic event?" Thirty-five percent said swimming was their favorite. Gallup gave a margin of error for this result. A) ....Plus or minus 3 percentage points just as for the overall poll B)...greater than plus or minus 3 points becuase the sample for this question is smaller C)...less than plus or minus 3 points because the population of swimming fans is smaller than the population of all adults D)...Less than plus or minus 3 points becuase the sample for this question is smaller
1 The Blue Tide High School Student Committee has 5 members. They would like to conduct a survey to get the students’ opinion on the school’s new bell schedule. They asked 23 students’ representatives to distribute a questionnaire to the schools’ 1550 students. In the end, they received 750 responses. They wrote a report based on the information provided by the respondents. 2) which number represents the size of the sample?
A politician wants to know what percentage of the voters support her position on the issue of political dynasty. What size voter sample should be obtained to determine with 90% confidence the support level to within 4%? O a. 423 O b. 25 O c. 1691 d. 600 e. 21
From the given scenario, define the population proportion. In 2019, a national survey organization asked the question "Do you go on more than two vacations per year?" to a random sample of 2,000 Americans. 580 responded "Yes", while the other 1,420 people responded "No". Group of answer choices: A) the proportions of the sampled Americans who go on more than two vacations per year B) the proportion of all Americans who go on more than two vacations per year C) the 1,420 people who responded "No" D) the 2,000 Americans
1 V. A randomly selected sample of 1000 college students was asked whether they had ever used the drug STC sixteen percent (16%) of the 1000 students survived said they had. which one of the following statements about the number (0.16) is correct: A. It is a sample proportion. B. it is a population proportion. C.it is a margin of error. D. it is a randomly chosen number
An art authenticator has a history of successfully identifying forgeries. Over her career, she has been asked to evaluate 74 actual forgeries and correctly identified 69 of them. Further, among all the authentic art she has looked at, she has never claimed any to be forgeries. An art dealer is considering purchasing a painting but is worried it is a fake. His experience in the field over the years indicates about 3% of the artwork he comes across is forged. a) If the dealer employs the services of the authenticator, and she indicates the painting is genuine, what is the chance it is actually a forgery? b) Without authentication, the dealer can sell the painting for $20,000. The price would increase to $25,000 if the painting were authenticated as genuine, but obviously it is worthless if it is deemed a forgery. The authenticator charges $2,000 for her services. Do you think it is worth it for the dealer to use the authenticator? Why or why not?
Jessica Johnson is running for mayor of a small city in Florida. She needs at least 51% of the votes to win. Her campaign wanted to predict whether or not she’s going to win. She hires five people to ask 100 randomly selected voters if they will vote for her. The results are shown in the table. Should Jessica predict that she will win? Poll Number Yes Votes 1 51 2 68 3 58 4 43 5 65 Jessica should predict that she will ["", ""] because ["", "", ""]
b) A certain pay television company wishes to estimate the proportion of its customers who would purchase a pay television program guide. To do this, the company manager decides to select a random sample of customers and note the number who would purchase a program guide. Suppose that experience in other areas suggests that about 13% of customers will purchase a program guide. How many customers should the company manager include in his sample if he wishes to estimate the true proportion who will purchase the program guide correct to within 5% (0.05) with a confidence level of 95%?

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