Pain medications sometimes come with side effects. One side effect is dizziness. A researcher wanted todetermine if some pain medications produced more or less dizziness than others. The results from hisstudy are shown in the table below,Tordol Placeb0 Naproxen Tylenol AdvilDizziness8332368No dizziness 406318321330382337What type of test would you use to determine if the proportion of people within each treatment groupwho experienced dizziness are the same?O Test for HomogeneityO Goodness of FitO Test for IndependenceSubmit Question

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Answered: Pain medications sometimes come with…

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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Answer the questions below. Use a=.05. Source SS D MS F Between 120 4 30 3 Within 400 40 10 Total 520 44 How many participants were in this study? How many levels were there? What is the value of Fcrit? Is there evidence of a significant treatment effect? Suppose that in reality, there are no significant differences among the population means. Was a statistical error committed? Briefly explain your answer.
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Using age as the quantitative variable and marital status (married/not married) as the categorical. Develop two research questions.
Three sample observations taken for two variables are shown below: X (In $) (In ounces) 2.78 0.60 1.79 1.47 0.80 2.34 When comparing X and Y, which varies the most? What is the value of this statistic (ornitting unit labels such as $, s2, ounces, ounces Ca. Y, 59.1837 Ob. X, 61.7026 CC. Y, 0.8700 Od. None of the answers is correct Ce. X, 0.9801
Help me answer these problems : One-way ANOVA Provide the ANOVA Table for each problem. An example ANOVA table is presented below:
A local authority is going to study the relationship between the size of household and the daily plastic usage consumed by them. The results of a sampling given below in Table 5 indicate some values of X (weight of plastic usage) and Y (the size of household). Table 5: Weight of plastic usage (X) and size of household (Y) X 0.27 1.41 2.19 | 2.83 2.19 1.81 0.85 3.05 Y 2 3 3 4 2 1 5 i) From the above sampling, find the value of correlation coefficient r. ii) Using the same sample data set above, conduct the hypothesis testing to know whether the variable X and Y are really correlates using 95% confidence level. iii) Find out if the decision in (ii) may change if you increase the confidence level to 99%.
On occasion, medical studies need to model the proportion of the population that has a disease and compare that to observed frequencies of the disease actually occurring. Suppose the end-stage renal failure in south-west Wales was collected for different age groups. Do the data in the table show that the observed frequencies are in agreement with proportion of people in each age group? Test at the 1% level. Renal Failure Frequencies Age group 16-29 30-44 45-59 60-74 75+ Total Observed Frequencies 125 152 134 124 48 583 Expected Proportion 0.23 0.25 0.22 0.21 0.09 State the hypotheses.H0: The observed frequencies in agreement with proportion of people in each age group.Ha: The observed frequencies in agreement with proportion of people in each age group. Calculate the χ2 test statistic. Round expected values to two decimal places. Round χ2 to 3 decimal places.χ2 = Calculate the p-value. Round to 3 decimal places.p-value = State your decision.Since p-value α,…
A college administrator wants to know if there is a significant difference between sexual orientation and level of family support for students at their college. The administrator takes a random sample of students who identify as gay/lesbian, bisexual or heterosexual/straight. There were 22 students sampled in each category. A measure of family support is given with higher scores indicating more family support. The means are as follows: Gay/lesbian Bisexual Heterosexual/Straight MG/L = 16 MBi = 17 MH/S = 22 Source SS df MS F Orientation 300 Error 2961 Total What is the value of df total?
Which of the following designs refers to a study in which the units of analysis are populations or groups of people rather than individuals (select one best answer)? Ecological study Case-control Study Cohort study Cross-sectional study None of the above
130 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 18 0.1385 18 1 21 0.1615 39 2 20 59 3 15 0.1154 4 16 0.1231 90 10 0.0769 100 6 0.1231 116 7 14 0.1077 130 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 5 times per week?
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