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A contingency table has 5 rows and 4 columns. How many degrees of freedom are there?
A) 20
B) 12
C) 16
D) 15
In the past HR uses an average of 25 vacation days per worker in order to make available man-hour and payroll predictions. Is there evidence to show that the number of vacation days decreased over the past year? Use alpha = .05
If one invested in Stock A, Determine standard deviation of percentage return?
Find out the value of correlation coefficient. Make a regression model to predict winning percentage utilizing all of the data.
Set up hypothesis and two-tailed decision rule for right mean using 5% level of significance. Hypothesis for a two-tailed decision is?
Records also point to that interviewing committee of bank officers approves 85% of individuals they interview. Determine probability that Ann's loan request is approved.
To test the given claim using Single Proportion Z test.
A state survey investigates either the proportion of 8percent for employees who commute by car to work is higher than it was five years ago.
The sample size n , the sample means, and the sample standard deviations for the two groups are given below.
Using α = .05 test for significance differences among the population mean wasted time for theses three urban areas. What is the p-value? What is your conclusion?
Describe the optimal solution to a linear programming problem. comprise the following constraints from a two -variable linear program.
Recognize independent variable and dependent variable for this experiment. Think in your head what influences what? Or, what causes what? Cause is independent variable.
If not what would be a better testing strategy? Could you form a Null Hypothesis or an Alternative Hypothesis? If yes, what would they be.
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