Subject RiskAge Blood Pressure Smoker3) Inferential Statistics 1:1.1257152a) Deduce using the appropriate statistical test whether or not there is a difference2.24671631358155between the risk of stroke for non-smokers and smokers. State the test method56861771.used, the null and alternative hypothesis and the conclusion.285919651761891718561551.83178120937801351.101578981122711521236701731.13156713511448772091151560199163682119178.661661834801251196211720375920721135615322256616223145715624578517625295819726527518812719551561.2832771192938791341301677993123701513237691741.331666134134497620813516592003637811181.37651673835791241394611184038582061

In order to determine whether the mean risk of stroke for non-smokers and for smokers are different,…

Answered: Subject Risk Age Blood Pressure Smoker…

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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Scenario: 200 people were asked, “Who is your favorite superhero?” Below are the data. Test the null hypothesis that the population frequencies for each category are equal. α= .05. Iron Man Black Panther Wonder Woman Spiderman fo = 40 fo = 60 fo =55 fo = 45 fe = fe = fe = fe = What is the correct result based on the data?
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Check My Work (4 remaining) Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported measure of visitor volume and visitor activity (Orlando Sentinel, May 19, 2018). Hotel occupancy data for February in two consecutive years are as follows. Current Year Previous Year Occupied Rooms 1,505 1,411 Total Rooms 1,750 1,700 a. Formulate the hypothesis test that can be used to determine whether there has been an increase in the proportion of rooms occupied over the one-year period. Let pi = population proportion of rooms occupied for current year p2 = population proportion of rooms occupied for previous year Ho : Pi – P2 equal to 0 H. : Pi – P2 equal to 0 b. What is the estimated proportion of hotel rooms occupied each year (to 2 decimals)? Current year Previous Year c. Conduct a hypothesis test. What is the p-value (to 4 decimals)? Use Table 1 from Appendix B. p-value = Using a 0.05 level of significance, what is your conclusion? We - Select your answer -…
The table shows the heart rate of students in a conditioning class after 1 minute of doing jumping jacks (beats per minute). 68 105 120 106 120 106 125 110 125 92 94 115 96 100 110 126 112 112 118 118 What is the first quartile of the observations? 106 102.5 105 O 100
Which of the following represents the correct order of a statistical analysis? Formulate a hypothesis; Gather data; Determine rejection of the null hypothesis Formulate a hypothesis; Determine rejection of the null hypothesis; Gather data Determine rejection of the null hypothesis; Gather data; Formulate a hypothesis Gather data; Formulate a hypothesis; Determine rejection of the null hypothesis
- test the null hypothesis that the population mean, u is 14.
3. Can SAT scores predict college performance? Let x be a variable that represents SAT score of a computer science major, and let y be a variable that represents a student’s GPA upon graduation. A random sample of n =15 computer science majors provided their SAT scores and GPAs: x 1232 1070 1086 1287 1130 1048 1121 1095 1135 1208 1333 1160 1186 1243 1261 y 3.52 2.91 2.4 3.47 3.47 2.37 2.4 2.24 3.02 3.32 3.59 2.54 3.19 3.71 3.58 The scatter diagram for the SAT score and GPA is given below: (a) Find the sample correlation coefficient r. Truncate to two decimal places. What does the value tell you about the data? (b) Find the equation of the least squares line . Truncate to four decimal places. What does the slope mean? (c) Find the value of the coefficient of determination . Truncate to two decimal places. What does this number mean? (d) What is the predicted GPA if a computer science major got a…
Let the degree of freedom of treatment be df1 and error be df2. Based on the figure, which is the correct combination of (df1,df2)? SUMMARY Groups Count Sum Average Variance Column 1 231 46.2 34.2 Column 2 200 40 2.5 Column 3 232 46.4 44.3 Column 4 168 33.6 20.3 A. (2,12) В. (2, 16) С. (4, 16) D. (3, 16) A. D Answer B.
The null hypothesis when testing for a single population can take many forms depending on the parameter being studied. If the parameter of interest is the population mean, which statement best represents the original claim that the parameter equals a given value, k?
Is the variance for the amount of money, in dollars, that shoppers spend on Saturdays at the mall the same as the variance for the amount of money that shoppers spend on Sundays at the mall? Saturday Sunday Saturday Sunday 75 44 62 137 18 58 0 82 150 61 124 39 94 19 50 127 62 99 31 141 73 60 118 73 89 What is the null hypothesis? What is the alternative hypothesis? What is the degrees of freedom (numerator)? What is the degrees of freedom (denominator)? What is the f statistic? What is the result? What is the p-value? Conclusion?
Determine the null and alternative hypotheses
Is the racial distribution for students on work-study different from the racial distribution for students not on work-study? The results of a recent study are shown below. Frequencies of Race for Students On and Not On Work-Study k Hispanic Asian 53 White Black Other Work Study 96 44 78 28 Not Work Study 82 66 108 86 32 R vector Data: 96,82,44,66,78,108,53,86,28,32 Contingency Table What can be concluded at the a = 0.05 significance level a. What is the correct statistical test to use? Setect an anserV b. What-are the matt and atternative hypotheses? Ho: Select an answer H1: Select an answer THE test-statistic for this data = (Please show your answer to three decimal places.) Sd. The p-value for this sample = (Please show your answer to four decimal places.) e. The p-value is Select an answer Based-en this, we should Seleet-an anower Thus, the final conclusion is... Select an answer Select an answer At the 5% significance level, the data provides insufficient evidence to conclude that…

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