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1. Why use the Wilcoxon T test. What is the hypothesis statements you used?
2. Consider do we prefer working with dependent samples or independent samples? Explain
3. We have the statement "The F-ratio provides the ability to determine the deviation between the population and the means and develop a method of accepting or rejecting a hypothesis." In fact we use the ANOVA which tests variances using the F ratio to determine if the mean values are equal. How can we use a test on variances to tell us about mean values?
4. Do information technology people get the respect they deserve? Ans: Yes.
Examine the question and what are your comments?
5. Consider "ANOVA is important because it gives a person a basis in which to infer if their null and alternative hypotheses are correct or not." This is true of all statistical testing. What is special about ANOVA?
U.S. News & World Report publishes the average starting salary and the average GMAT score for MBA graduates at each of the top 80 ranked schools in the country.
After performing a two sample t-test, you see a p-value of 0.0355. Of the following, which is the appropriate conclusion?
Solve different inventory control problems using an appropriate OR method.
Jack is doing a project in educational psychology. Before the experiment, he rank-orderes all his participants according to achievement test scores.
What does the standard deviation mean? Interpret the standard deviation relative to the average or mean?
For a hypothesis test about a population proportion or mean, if the level of significance is less than the p-value, the null hypothesis is rejected.
Assume that the measurements came from a normal distribution. The variability of the manufacturing process is unknown means the same as the standard deviation is unknown.
Index number acts as a barometer for measuring the value of money. What are the characteristics of an index number? State its utility.
Provide a description of one method for estimating the reliability and one method for substantiating the validity of a test.
Determine and report the within-group slope which relates Y to Xc (for this, you will have to look at your regression printout).
To cross a single lane of moving traffic, we require at least a duration d. Successive car interarrival times are independently and identically distributed with probability density function fT (t).
At.05 level of significance test to find out if number of breakdowns is independent of shift.
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