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What is a discrete random variable and how does it differ from a continuous random variable? Give examples.
The consequences of the central limit theorem is that if we end up averaging the measurements of a particular quantity, the distribution of an average tends on going toward a normal one?
The daily numbers of calls received by the Internal Revenue Service office in July are shown below:
Bill is completing a project for you in the marketing department. In conducting his anaysis regarding consumer behavior and a new product that has been released, he tells you the correlation between these two variables is 1.09.
The correct set of hypotheses to test the effect of the bonus plan, the difference between the t and z distributions
Bob gets tests grades of 86, 92, and 60 He gets an 90 on his final exam. Find the weighted mean if each tests counts for 20%, and the final exam counts for 40% of the final grade.
Bill calculates a linear correlation coefficient between two variable as 1.20. How would you interpret this?
Find out the expected number of correct responses under these circumstances if one in fact selects the responses at random. What is the standard deviation?
Given what you've learned in this module about the meaning of "statistics", choose one of the examples from Part I (A-F), and raise a relevant question of your own that could be answered by a statistician.
Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance and (d) standard deviation of probability distribution and (e) interpret results in context of real life situation.
At the 10% level of significance, is there sufficient evidence to indicate that more books are being loaned out per day, on the average?
Perception of Time- Randomly selected statistics students of the author participated in and experiment to test their ability to determine when 1 min(or 60 seconds) has passed.
Draw the distribution of the random variable X, representing her time of arrival. (Be sure to include labels and values on the axes.)
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