Registrar's Office conducted a study of independence between two binary variables, (X, Y), VariableX indicates individual performance (High or Low) and Y characterizes a student's status (Graduate orUndergraduate). A group of n = 600 respondents has shown summaries as follows.Observed FrequenciesUndergraduate GraduateRow SumHigh311139450Low8961150Column Sum400200600Expected CountsUndergraduate GraduateRow SumHigh450Low150Column Sum400200600Test independence of (X, Y) at the significance level a = 0.05• Find ESTIMATED EXPECTED COUNTS under the null hypothesis of homogeneity / inde-pendence between gender and satisfaction and 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.Next page is reserved for DETAILED solution.

The data shows the individual performance and student's status.

Answered: Registrar's 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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Two teachers had 30 of their students take a test. Teacher A found a mean of 78.6 with a SD-3.5 while teacher B found a mean of 77.3 and a SD-4.1. At the 97% level, test the opnion that class B is less than class A. 1. Is the test (A-Left Tailed, B-Right Tailed, C-2-Tailed) (separate with a comma if there are 2) 2. Critical Value 3. Test statistic 4. 3-decimal p-Value
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A dietician is researching two new weight gain supplements that have just hit the market: Ripped and Gainz. She wants to determine if there is any difference between the two supplements in the mean amount of weight gained (in kg) by the people who take them. The dietician tracks the total weight gain (in kg) over a year of a random sample of 14 people taking Ripped and a random sample of 12 people taking Gainz. (These samples are chosen independently.) These data are shown in the table. Total weight gains (in kg) Ripped Gainz 14.1, 10.9, 12.1, 5.2, 12.0, 17.1, 9.0, 14.8, 11.2, 6.8, 12.4, 8.5, 12.1, 10.5 Send data to calc... v 7.6, 9.5, 8.6, 10.8, 7.9, 10.0, 8.4, 6.2, 8.6, 10.2, 8.9, 8.2 Send data to Excel Assume that the two populations of weight gains are approximately normally distributed. Can the dietician conclude, at the 0.05 level of significance, that there is a difference between the population mean of the weights gained by people taking Ripped and the population mean of the…

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