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When an experiment is conducted, one variable is manipulated to see the impact on another variable -- that's why experiments address causation. The variable that is controlled or manipulated is called the independent variable and the one that is impacted is called the dependent variable.
An example from my text is how one recognizes hard work and its impact on productivity. A manager recognizes his or her employees, so the employees are very productive. Recognition is the independent variable and productivity is the dependent variable.
Question: I do not really understand this. Can someone give me another example of a situation from every day life where there would be an independent variable and a dependent variable?
Indicate your hypotheses, decision rule, statistical decision and management conclusion using the critical value and then find the p-value and state your decision rule, statistical decision and management conclusion using this method.
It is not unusual for a battery to have life span that is more than 2470 hours as the z-score is within 2 standard deviations of mean.
At the .05 level of significance, is there convincing evidence that the number of absences per employee has increased?
Please use a combination of content and supportive examples.
Normal distribution of 5 pounds per square inch, standard deviation of 1.5 pounds per square inch, what proportion have less that 3.17 pounds per square inch, at least 3.6 pounds, are between 5 and 5.5 and 95% will be contained between what two va..
Write introduction to SPC (STATISTICAL PROCESS CONTROL)? Describe the use of SPC tools used at D2D?
Suppose you want to test the hypothesis that students who study one week before score different from students who study the night before. A 2 sample t-test test is run based on your data and a p-value is calculated to be 0.0219. What is the approp..
The management of a regional bus line thought its cost of gas might be correlated with its passenger/mile ratio. Comment on the data and correlation matrix below.
Formulate a linear programming model for this problem.
The alternative hypothesis is true. In this case the consumer advocacy group will have, A consumer advocacy group doubts this claim and tests the hypotheses
P-value for test statistic is .085, determine the minimum level of significance needed to reject null hypothesis?
You listen to radio station for 1 hour, at arbitrarily selected time, and carefully observe that amount of advertising time is equal to 7 minutes. Compute z-score for this amount of advertising time.
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