Provost Office conducted a study of independence between two binary variables, (X,Y). Variable Xindicates a student's major (MATH or Computer Science) and Y characterizes individual performance(Above or Below Average). A group of n = 600 respondents has been summarized in the contingencytable below.Observed FrequenciesY = ABOVE Y = BELOWRow SumX = MATH14060X = COMP Science31090Column Sum600Expected CountsY = ABOVEY = BELOWRow SumX = MATHX = COMP ScienceColumn Sum600Test independence of (X, Y) at the significance level a = 0.05• ESTIMATE EXPECTED COUNTS under the null hypothesis of homogeneity / independencebetween X and Y. Then place them into the table provided above.• Evaluate the TEST STATISTIC for this study• Specify CRITICAL VALUE (or VALUES) required for hypothesis testing procedure.• Formulate REJECTION RULE and then state your decision about independence.7

In the study, the variable X be the student's major and Y be the individual performance.

Answered: Provost Office conducted a study of…

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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lecture(12.9): Identify the following variables as categorical or numerical. (a) Th ethnicity of the individual respondents in a political poll of randomly selected group of adults. (b) the income amount of the individual respondents in a political poll of randomly selected group of individuals. (c) The gender of children who have completed Peacock Picture Test.
Please answer all sub-parts A doctor wanted to determine whether there is a relation between a male’s age and his HDL (so-called good cholesterol). He randomly selected 9 of his patients and determined their HDL cholesterol. The data is reported in the table below: Age (Yrs) HDL (?μmol/L) 38 57 42 54 46 34 32 56 55 35 52 40 61 42 61 38 26 47 a) Compute the regression equation for HDL as a function of age. b)Interpret the meaning of the regression parameters. c) Compute r and r2. Interpret these statistics. d) What is your opinion of the usefulness of using age as a predictor of HDL?
KidsFeet Parallel Scatterplots by Sex The KidsFeet dataframe contains data collected on 39 fourth grade students in Ann Arbor, MI, in October 1997. Two of the measurements taken on the children was the length, (length), and width, (width), of their longest foot. Based on the scatterplot shown below, there appears to be a positive linear association between the length and width of a fourth grader's biggest foot that holds even when the child's sex is accounted for. One of the following lines of code created everything in the graph below, except for the title and the axis labels. Which one was it?? ( ) xyplot(length~width, groups=sex, data=KidsFeet) ( ) xyplot(width~length,groups=sex,data=KidsFeet) ( ) xyplot(width~length|sex,data=KidsFeet) ( ) xyplot(width~length,groups=sex,data=KidsFeet, auto.key=TRUE) ( ) xyplot(length~width|sex, data=KidsFeet) ( ) xyplot(length~width, data=KidsFeet) ( ) xyplot(length~width, groups=sex, data=KidsFeet, auto.key=TRUE) ( )…
I need help with all of them plz.
Consider the following data set *; | -1|2|3 Yi | 3 |2|1 and the model y = a, + a1¤ Calculate the squared error (SE) for the choice a, = 8 and a1 = -1 Answer:
Beachcomber Ltd in a local car dealership that sells used and new vehicles. The manager of the company wants to know how different variables affect the sales of his vehicles. A random sample of yearly data was taken with the view to testing the model: SALES=?+?AGE+?MIL+?ENG Where SALES= amount that a vehicle is sold for($000’s), AGE = age of the vehicle, MIL= the total mileage of the vehicle at the point of sale and ENG = the size of the engine. The sample of data was processed using MINITAB and the following is an extract of the output obtained: a) What is dependent and independent variables? b) Fully write out the regression equation c) Fill in the missing values ‘*’, ‘**’, and ‘***’.
Please answer the remaining questions
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Indicate the dependent and independent variables, the number of levels for each independent variable, and whether each variable is within-subjects or between subjects 1. Individuals with anorexia and individuals with bulimia take a cognitive distortions test upon entering a treatment program for eating disorders and again three weeks later.
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. Present a description of your variables: Provide a codebook with the following four columns: (1) Variable name; (2) Variable label; (3) Value & Value label and Level of measurement (i.e., nominal, ordinal, interval, ratio). Please present this as a table. This should fit on one page.
Do you find any inconsistency in the data given below : N= 1,000, (AB) = 483, (AY) = 378, (BY) = 226 (A) = 525, (B) = 312, (C) = 470 and (ABC) = 25 %3D

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