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Average balance for customer accounts in The Reserve Fund at the time it was frozen by Securities Exchange Commission (SEC) was $22,500, with standard deviation of $7,500. SEC overseers want to draw the sample of 100 accounts to help assess influence of fund's freeze on account holders. Precisely (i.e., using specific numbers) what does central limit theorem tell us about sampling distribution of sample means for samples of this size from this population?
The professor wishes to use a random-number table to determine which letter choice should correspond to the correct answer for a question.
A sample of waterfall heights in Hawaii show that the average height is 261.5 feet with a standard deviation of 13.76 feet.
In relative frequency histogram for a large set of GPAs, the mean and the standard deviation are 2.10 and 0.21 respectively. What proportion of GPAs falls within 1.68 and 2.52?
The house of representatives has a very controversial bill that will be going to vote. To help formulate his strategy on how to get the bill passed, the chairman of the committee that has been studying the bill wishes to know if there is a divisio..
Which measure of association would the researcher use to compare the relationship between the IV and DV? Why?
Explain how we test independent against dependent variables in a regression analysis? What's the set up? How are regression analyses often misused / misinterpreted at work or in the news? Cite an example.
If the pilot plant fails, Rob feels the chance of the full-scale facility succeeding is only 20%. The probability that the pilot plant will succeed is estimated at 0.6. Structure this problem with a decision tree and advise Rob what to do.
Make a scatter plot of Y and X1 using Word. To do this click on insert and then chart. Click on X Y (Scatter). Enter the data from the table.
Whirltag claims that the useful lifetime of its dishwashers is normally distributed with a mean of 3 years and a standard deviation 1 year.
The consultant is given a sample of 225 batteries to test. A. Calculate the standard error of the mean.
what is the probability that a randomly selected value from the distribution will be greater than 2.1 standard deviations avoe the mean?
I have the t-score of 1.660 an a standard error of .036. I hope they are correct, but also need the test effect and test statistic, p-value.
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