Among 70 school children set up an experiment in which you test that sex of the child and handedness are independent. What is null and alternative hypothesis? What is the p value? Do you reject the null hypothesis? What is the type 1 error? Вoys Girls Total Left handed 6 12 18 Right handed 28 52 Total 34 36 70 24

Among 70 school children set up an experiment in which you test that sex of the child and handedness are independent. What is null and alternative hypothesis? What is the p value? Do you reject the null hypothesis? What is the type 1 error? Вoys Girls Total Left handed 6 12 18 Right handed 28 52 Total 34 36 70 24

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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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Test whether , P2 at the a=0.02 level of significance for the sample data shown in the accompanying table. Assume that the populations are normally distrboted. Click the icon to view the data table. Determine the null and alternative hypothesis for this test - X Sample data OA Ho OR H, Population 1 Population 2 H, 32 25 100 4 114.5 OC H H, COD. H 122 133 Print Done Detemine the Pvalue for this hypothesis test P=(Round to three decimal places as needed) State the appropriate conclusion, Choose the corred answer below O A. Reject H, There is not suficient evidence at the a0 02 level of signiticance to conclude that H, OB. Do not reject H, There is sufficient evidence at the a0.02 level of significance to conclude that , O C. Do not reject Ho There is not sufficient evidence at the a 0.02 level of signiticance to conclude that OD. Reject Ho There is suficient evidence at the 0.02 level of significance to conclude that p,
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A marketing agency wanted to determine if a new commercial changed people's opinion about a company. They recruited n=30 participants to watch the commercial. First, everyone was givien a survey to determine their attitudes toward the company. Then, everyone watched the new commercial. Finally, they were given the same survey again and asked about their attitudes toward the comapny after seeing the commercial. The agency wanted to see if attitudes were changed by the commercial. What statistical test should they use?
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The ___________ is a value used in making a decision about the null hypothesis and is found by converting the sample statistic to a score with the assumption that the null hypothesis is true.
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The General Social Survey is an annual survey given to about 1500 U.S. adults selected at random. A recent survey contained the question "How important to your life is having a fulfilling job?" Of the 265 college graduates surveyed, 99 chose the response "Very important." Of the 118 people surveyed whose highest level of education was high school or less, 42 chose the response "Very important." Based on these data, can we conclude, at the 0.01 level of significance, that there is a difference between the proportion p₁ of all U.S. college graduates who would answer "Very important" and the proportion p of all U.S. adults whose highest level of education was high school or less who would answer "Very important"? Perform a two-tailed test. Then complete the parts below. Carry your intermediate computations to three or more decimal places and round your answers as specified in the parts below. (If necessary, consult a list of formulas.) (a) State the null hypothesis Ho and the alternative…
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The Bureau of Labor Statistics reports that the official unemployment rate for Black people was 10.4% and 4.7% for White people in February 2015. Select all correct answers for this question. O The samples of white and black people are independent. The explanatory variable is the unemployment rate. The response variable is the unemployment rate. The response variable is race.
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In general terms, what is a hypothesis test? Are hypothesis tests based on descriptive statistics or inferential statistics? Is a t test an inferential statistic? a. Enter your response here.