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The manufacturer of the ColorSmart - 5000 television set claims that 95 percent of its sets last at least five years without needing a single repair. In order to test this claim, a consumer group randomly selects 400 consumers who have owned a ColoSmart - 500 television set for five years. Of these 400 consumers, 316 say that their ColorSmart - 500 television sets did not need repair, while 84 say that their ColorSmart - 5000 television sets required did need at least one repair.
a. Letting p be the proportion of ColorSmart - 5000 television sets that last five years without a single repair, and set up the null and alternative hypothesis that the consumer group should use to attempt to show that the manufacturers claim is false.b. Use rejection points and previously given sample information to test the hypothesis you set up in part a by setting alpha equal to 010, .05, .01, and .001. How much evidence is there that the manufacturer's claim is false?c. Do you think the results of the consumer group's survey have practical importance? Explain your opinion.d. Complete the exercise from the data given and answer all of the questions in a written summary. Cut and paste any EXCEL data that you wish to discuss.
At a board meeting of 20 businessmen, all of whom wear ties, what is the probability that:
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What is the smallest level of significance at which you could reject the null in favor of the alternative hypothesis?
A poll of U.S. health professionals revealed 82% would choose the same career. In a hypothesis test conducted at a level of significance of 5%, a P-value of 0.023 was obtained.
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Calculate the test statistic for the claim in, using the following information. Sample information: A random sample of 40 repairs has a sample mean price of $132.09 and a sample standard deviation of $13.58.
Use Hypothesis testing to compute te correlation between these two variables and these it for significance. Test at .01 level of significance.
what is the sampling distribution model of the percent passing developmental courses for your campus in Fall 2009 and provide the percentages between which we would expect to see 68% of the sampling distribution, 95% of the sampling distribution
Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work so I can see how to do this for the future. This one is good example of what I can do in future for real estate.
Take your data and arrange it in the order you collected it. Count the total number of observations you have, and label this number N. Then create another set of data starting from one and increasing by one until you reach N.
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