a) State the null and alternative hypothesisb) Determine the critical value by using t-tablec) Determine the rejection regiond) Calculate the Test statistic Testing the difference between means (Independent Samples, 01, 02 unknown) Amagazine claims that the mean amount spent by a customer at a Burger Stop is greater than themean amount spent by a customer at Fry World. The results for samples of customertransactions for the two fast food restaurants are shown below. At a=0.05, can you support themagazine's claim? Assume the population variances are equal.Sample Statistics for AmountSpent by CustomersBurger Stopx₁ = $5.46$₁= $0.89n₁ = 22Fry Worldx₂ = $5.12$2 = $0.79n₂ = 30

It is given that x̅1 = $5.46, x̅2 = $5.12 s1 = $0.89, s2 = $0.79 n1 = 22, n2 = 30 Note:…

Answered: State the null and alternative…

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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A medical researcher wishes to see whether the variance of the heart rates (in beats per minute) of smokers is different from the variance of heart rates of people who do not smoke. Two samples are selected, and the data are shown. Using α = 0.05, is there enough evidence to support the claim? Assume the populations are normally distributed. a) State H0 and Ha b) Calculate the test statistic c) Find critical value(s)and make a decision d) State conclusion.
12) In a random sample of 50 patients undergoing a standard surgical procedure, 15 required medication for postoperative pain. In a random sample of 90 patients undergoing a new procedure, only 16 required pain medication. A physician claims that the proportion of patients who need pain medication is the same for both procedures. Test the claim with an appropriate hypotheses test. Use a 0.05 level of significance. a) Define the parameter(s). Fill-in-the-blanks. is the true. medication after undergoing the standard surgical procedure is the true of patients that require pain 5 of patients that require pain medication after undergoing the new surgical procedure b) Hypotheses. Note claim. c) Test d) Reject or Fail-to-Reject Ho? Why? e) Does the evidence contradict the physician's claim that the proportion of patients who need pain medication is the same for both procedures? yes or no f) At a 0.10 significance level, does the evidence contradict the physician's claim that the proportion of…
According to the Center for Disease Control, 60.9% of college students nationwide are fully vaccinated for COVID. You wish to determine if the national average describes the mean vaccination rate for college students in San Francisco. You recruit a random sample of 48 college students in San Francisco to test the research question. a) where applicable, identify the independent and dependent variables; b) write the null and the alternative hypotheses; c) find the critical value(s) and make sure to note whether the test is one- or two-tailed; d) state what type of test to perform (e.g., one sample z, paired samples t test, One Way ANOVA, etc.) Assume alpha = .05 for each problem.
8
1) Why does the comparison distribution change from normal to kurtotic when switching from a one-sample z-test to a one-sample t-test? 2) Provide an example of a research question relevant to your academic or career interests that is appropriate for a dependent means t-test and explain why it is appropriate for that inferential test (i.e., why is the structure of the research question well-suited for a dependent means t-test?). 3) Provide an example of a research question relevant to your academic or career interests that is appropriate for an independent means t-test and explain why it is appropriate for that inferential test (i.e., why is the structure of the research question well-suited for an independent means t-test?). 4) Provide an example of a research question relevant to your academic or career interests that is appropriate for a chi-squared test for independence and explain why it is appropriate for that inferential test (i.e., why are the variables and research question…
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Preventable chronic diseases are increasing rapidly in some regions, particularly diabetes. Shown below is a contingency table showing cross classification of educational attainment and diabetic state for a random sample of 1337people in a region (HS is high school). Find the critical value for a test for independence at the 0.01 significance level. Do NOT perform the hypothesis test. Less than HS HS grad Some college College grad Total Diabetes 29 37 24 34 124 No diabetes 377 245 311 280 1213 Total 406 282 335 314 1337 The critical value is.......
Only answer question D and E. Please show all steps without short-cuts and show the Bell curve graphs.

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State the null and alternative hypothesis b) Determine the critical value by using t-table c) Determine the rejection region