In a major election, a survey with 1000 voters isconducted. It is found that,among them, 450 votes like candidate A, while 410 voteslike candidate B.Can we conclude that candidate A is more popular thancandidate Bat 5% level of significance?Convert this problem to statistical hypothesis testingproblem. The value of test statistic is:11.7721.8131.9242.15.

Sample size = 1000 for both. X1 = 450 X2 = 410 At 5% level of significanve. By using two sample…

Answered: In a major election, a survey with 1000…

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 U.S. Bureau of Labor Statistics reports that 11.3% of U.S. workers belong to unions (BLS website, January 2014). Suppose a sample of 400 U.S. workers is collected in 2014 to determine whether union efforts to organize have increased union membership. 1. What is the test statistic? If the sample results show that 52 of the workers belonged to unions, what is the p-value for your hypothesis test? At α=.05 , what is your conclusion?
A sample of 45 households reveals that 23% have traveled overseas. Is this significantly different from a hypothesized value of 30%, which characterizes the entire country? Use a significance level of 0.05. Write down the null and alternative hypotheses, find the test statistic and the p-value, and state your conclusion.
The president of a large free-standing laboratory claims that 80 percent of his 5,000 customers are satisfied with the service they receive. To test this claim, a MT research group surveyed 100 customers, using simple random sampling. Among the sampled customers, 73 percent say they are satisfied. Based on these findings, can we reject the president's hypothesis that 80% of the customers are very satisfied? Use a 0.05 level of significance.
At the 0.05 significance level, can we conclude that the mean amount spent has increased? Follow the five step hypothesis testing procedure.
Kevin, a Human Resources professional, would like to make the claim that the average hourly wage for administrative workers at his company is less than $9.69. Kevin samples 15 workers and obtains a sample mean of $8.80 per hour. At the 1% significance level, should Kevin reject or fail to reject the null hypothesis given the sample data below?
The CEO of a large electric utility claims that 80 percent of his 1,000,000 customers are very satisfied with the service they receive. To test this claim, the local newspaper surveyed 100 customers, using simple random sampling. Among the sampled customers, 73 percent say they are very satisfied. Based on these findings, can we reject the CEO's hypothesis that 80% of the customers are very satisfied? Use a 0.05 level of significance.
A store that sells LPG claims that the mean weight of their tanks are exactly 11-kgs as prescribed. Using a random sample of 15 LPG tanks, a regular customer tests the theory that the average weight of the store's tanks are somehow lower than the prescribed weight. Use a significance level of α=0.10
According to a survey of 650 Web users from Generation Y, 351 reported using the Internet to download music. a. Determine the sample proportion. b. At the 5% significance level, do the data provide sufficient evidence to conclude that a majority of Generation Y Web users use the Internet to download music? Use the one-proportion z-test to perform the appropriate hypothesis test, after checking the conditions for the procedure.
In the previous year, 40% of women over the age of fifty had regularly scheduled mammograms. Following last year's test, a campaign was initiated to encourage women to be tested regularly. This year, a cancer research group surveys a random sample of 450 women, and 195 respond affirmatively. With a 5% significance level, test to see if the campaign was effective. What is the null hypothesis? What is the decision rule? What is the test statistic? What is the p-value? What is the conclusion?
A presidental candidate's aide estimates that, among all college students the propotion p who intend to vote in the upcoming election is at most 65%. If 186 out of a random sample of 260 college students expressed an intent to vote, can we reject the aid's estimate at 0.1 level significance? What is the type of statistic? what is the value of the test statistic? What is the p-value? Can we reject the aide's estimate that the proportion of college students who intend to vote is at most
A consumer group is investigating a producer of diet meals to examine if its prepackaged meals actually contain the advertised 6 ounces of protein in each package. Based on the following data, is there any evidence that themeals do not contain the advertised amount of protein? Run the appropriate test at a 5% level of significance. What is the p-value of the test?
Comfort Food Magazine states the average calories of a medium size hot dog is 209. The number of calories for a medium size hot dog is normally distributed. A random sample of 15 different brands of medium size hot dogs resulted in the following calorie count provided below. Can it be concluded that the average calories of a medium size hot dog will be 209 based on level significance of 0.01?

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