Based on the 2 groups given, calculate the degree of freedom and pooled variance. eGroup 1: Humor Group 2: No humor16165144161716163514131513716315133412161413144512614

Group 1: Humor Group 2: No Humor 6 6 5 3 4 5 4 3 6 3 7 4 6 2 6 6 3 4 5 3 4 4…

Answered: Group 1: Humor Group 2: No humor 16 16…

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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The spreadsheet records the accuracy of 100 students spread out across 10 groups (or courses). ACCURACY is a measure of how well a student accurately inputs data into SAS; higher values indicate superior accuracy while lower values indicate inferior accuracy. GROUP is simply the course number assigned to the student—it is also known as a factor level. Various statistical tests assume the ten levels may have differing means of accuracy; however, they also assume that all levels have the same variance. But, how the heck do we know that? This means we must check to see whether all levels have the same variance. Do all ten groups exhibit equal variances? How do you know? Are any of the groups different than the others? How do you know? Perform Levene’s test and write it up. Accuracy Group1.0060 10.9960 10.9980 11.0000 10.9920 10.9930 11.0020 10.9990 10.9940 11.0000 10.9980 21.0060 21.0000 21.0020 20.9970 20.9980 20.9960 21.0000…
Generate 10000 instances of a poisson (10) random variable and then compute the sample mean, sample variance, and sample standard deviation.
Define ADL or GLS: Bias versus variance?
Explain the circumstances under which we would need to pool the variance for an independent samples t-test
A researcher is interested whether a new drug is effective in changing patients' cholesterol levels. She divided 33 patients into 3 groups according to the dosage the patient received. The cholesterol levels of all patients are measured and used as the data for the Analysis of Variance (ANOVA). If she reported the test statistic F = 2.1 What is the degree of freedom for the numerator of the F statistic? What is the degree of freedom for the denominator of the F statistic? What is the P-value of the F-test? (Round to 3 decimals) Given the significance level of 0.01, what can she conclude from the test? *The patients in differnt groups have simliar average cholesterial levels. The drug made no difference. *At least one group of patients have an average cholesterol level that is different from the other groups. The drug may have an effect.

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Group 1: Humor	Group 2: No Humor
6	6
5	3
4	5
4	3
6	3
7	4
6	2
6	6
3	4
5	3
4	4
3	4
5	5
3	2
7	6
6	4

Group 1: Humor Group 2: No humor 16 16 15 4 4 16 7 16 16 13 15 14 3 15 3 7 16 13 5 сл 33 3 42 6 4 3 4 4 5 2 6 4