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1. Why do researchers use factor analysis?
2. Imagine that you conducted a factor analysis on a set of variables that were uncorrelated with one another. How many factors would you expect to find? Why?
Test the null hypothesis of no association, with attention to the natural ordering of the columns. State clearly your alternative hypothesis and choice of test size.
i have two questions i need help with. please show me how to obtain the answers. they are in the attachment. thank
where t is in hours, and λ{t) = λ{t - 24), for t ≥ 24. Furthermore, the duration (in minutes) of a call received at night has a uniform distribution on the interval (0,2], whereas the duration of a call received during the day has
Their lifetime than non-college graduates. If you were to question the validity of this observation, what would be your basis for doing so?
Assume that cans of Coke are filled so that the actual amounts have a mean of 12.00 oz and a stand. dev. of 0.11 oz. Find the P that a sample of 36 cans will have a mean amount of at least 12.19 oz.
When you calculate CIs for time on task, I notice that you use the critical value from the t-distribution (TINV(0.05, degrees_of_freedom))
why is it important that a sample be random? for its validity all hypothesis testing depends heavily on the assumption
Two textbooks are selected at random from a shelf that contains three statistics texts, two mathematics texts, and three physics texts. If X is the number of statistics texts and Y the number of mathematics texts actually chosen, construct a table..
For the following variables identify their level of measurement and whether the variable is discrete or continuous. Ex. What is your Zodiac sign. Ex How many pets do you own?
Use the steps of hypothesis testing; (b) figure the effect size for the study; And (c) explain your answers to parts (a) and (b) to someone who has never had A course in statistics.
What other summaries of the mutual fund's rate of return are of importance to a person selecting a retirement plan?
The following data are from an independent-measures experiment comparing two treatment conditions. Do these data indicate a significant difference between the treatments
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