Exercise two: In a randomized controlled trial study, 71 patients with cerebralvascular infarction were randomly allocated into two groups (A and B) and receivedone of two therapies. After treatment, the results are shown in the following table.TherapyABTotal11314071Effective case252954+Effective rate (%)80.6572.5076.10Questions:(1) What hypothesis test is selected for comparison between groups?(2) Is there a cell with too small theoretical frequency? What is the minimumtheoretical frequency?(3) Please conduct hypothesis test to answer whether there is different effective ratebetween two therapy groups.Send your answers to my email box: ahfaa2000@yahoo.comWord or pdf not SPSS format

Hi! Thank you for the question, As per the honor code, we are allowed to answer one question at a…

Answered: 14 Therapy A B Total 11 31 40 71…

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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Q2) Independent-Samples t-Test (Round calculated results to the hundredth (2nd place to the right of the decimal)) In a research project, researchers collected demographic and health data from a sample of elderly residents in the community. To examine any possible gender differences in their sample, they want to see if the females and the males differ significantly on the education level (number of years of formal schooling). The researchers are not predicting any direction in the possible gender differences so the hypotheses should be non-directional. They would like to run a two-tailed test with α = .10. Male Subject ID Education Female Subject ID Education 1 14 13 14 2 15 14 15 3 17 15 18 4 13 16 18 5 15 17 16 6 15 18 17 7 13 19 16 8 15 20 16 9 15 21 17 10 16 22 15 11 17…
Describe a situation where you would use a test of significance on the difference between the means of two populations by stating a pair of populations composed of the same type of individuals and a quantitative variable on those populations. You may want to mention hypotheses, the sizes of samples from those populations, and the degrees of freedom of your test statistic.
An educational psychologist is examining response times to an on-screen stimulus. The researcher believes there might be a weak effect from age, but expects a more pronounced effect for different color contrasts. She decides to examine a black on white (B/W) combination compared to 2 alternatives: red on white (R/W) and yellow on blue (Y/B). Here is the data for response times (in milliseconds): Color Scheme B/W R/W Y/B 10 17 23 26 44 44 22 21 25 22 21 4 16-17 11 32 34 31 24 20 16 20 21 36 8 8 24 37 23 11 39 36 23 17 28 32 36 31 Age 18-19 19 15 45 15 35 36 13 47 23 16 19 31 24 30 25 16 40 16 27 25 42 23 28 35 20-21 21 18 42 27 19 39 39 28 27 18 26 38 Using MS Excel, conduct a 2-way ANOVA with a = 0.05. Fill in the summary table. The last column in the table below is read as, "Partial Eta-squared " and is a concept that was NOT covered in the lectures. Partial n2 is used when there is a chance the data is not independent (click here to read more if interested 2) Computing the values for…
P-values should be accurate to 4 decimal places and all other values accurate to 3 decimal places. Source S df MS F-ratio P-value Partial n? Age (A) 2 Color (B) Interaction (A × B) 4 Error 63 Provide the conclusions for this 2-way ANOVA. What is the conclusion regarding the main effect for age (A or rows): O There appears to be an effect due to age. O There is not enough evidence to reject the assumption that the marginal means across age groups are equal. What is the conclusion regarding the main effect for color (B or columns): There appears to be an effect due to color. There is not enough evidence to reject the assumption that the marginal means across color groups are equal. What is the conclusion regarding an interaction effect between age and color (A x B): There appears to be an interaction effect between age and color. There is not enough evidence to reject the assumption of a lack of an interaction.
Researchers were interested in assessing whether stress levels are different at the beginning of the semester compared to finals week. To test this, stress was measured in 5 students at the start of the semester and then again at the end of the semester during finals week. Participant Stress 1 Stress 2 Difference Score (Di) (Di - Mdiff)2 1 22 22 0 2 32 34 -2 3 24 25 -1 4 28 30 -2 5 26 29 -3 What is the observed test statistic (i.e., tobs)? Round to 2 decimal places.
Please help me!! this is all one question and i can not submit it untill it is all answered. I will rate please help The types of raw materials used to construct stone tools found at an archaeological site are shown below. A random sample of 1486 stone tools were obtained from a current excavation site. Raw Material Regional Percent of Stone Tools Observed Number of Tools as Current excavation Site Basalt 61.3% 902 Obsidian 10.6% 165 Welded Tuff 11.4% 166 Pedernal chert 13.1% 204 Other 3.6% 49 Use a 1% level of significance to test the claim that the regional distribution of raw materials fits the distribution at the current excavation site. (a) What is the level of significance?State the null and alternate hypotheses. H0: The distributions are the same.H1: The distributions are the same.H0: The distributions are the same.H1: The distributions are different. H0: The distributions are different.H1: The distributions are different.H0: The distributions are…
help me find test statistics, critical values and rejection region
Please help with 1-8! I've seen a bunch of different answers and would love work shown so I can understand. Thank you! 1. are the samples dependent or independent? 2. State null/alternative hypotheses 3. what is the test statistic? 4. What is the p-value? 5. What are the critical values? 6. Does the test statistic lie in the rejection region? 7. interpret the results 8: does the result change for a different value of alpha? Explain
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I need to know am I correct
Which two fields of the ANOVA summary table help us find the critical value? Select all that apply A.df between B.MS within C.df within D. MS between

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