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The average balance for customer accounts in The Reserve Fund at the time it was frozen by the Securities Exchange Commission (SEC) was $22,500, with a standard deviation of $7,500. The SEC overseers want to draw a sample of 100 accounts to help assess the impact of the fund's freeze on the account holders. Precisely (that is, using specific numbers) what does the central limit theorem tell us about the sampling distribution of sample means for samples of this size from this population?
A bank official reported the results of a regression analysis designed to predict the bank's charges (y), measured in dollars per month, for services rendered to local companies.
The following data show the cost of electricity during August 2010 for a random sample of 50 one-bedroom apartments in a large city:
Describe the sampling distribution of the sample mean.
A recent census of a small town in Michigan showed that 60% of the residents are male, 20% have college degrees, and 15% are both male and college graduates.
Determine z score corresponding to minimum height requirement and determine z score corresponding to maximum height requirement.
One possible explanation for why some birds migrate and others maintain year round residency in a single location is intelligence.
What are the null and alternative hypotheses for this test? Use ANOVA and the 0.05 level of significance in testing the null hypothesis identified in part (a).
As a sample size approaches infinity, how does the student's t distribution compare to the normal z distribution? When a researcher draws a sample from a normal distribution, what can one conclude about the sample distribution? Explain.
If die is loaded so that 6 comes up with probability 0.2 and probabilities of 2,3,4, and 5 faces are not affected, determine the assignment of probabilities to the six faces?
This indicates that about 80 out of 100 similarily constructed intervals would include the population porportion. (true or false)
You're given that the forecast for the current period of 70 turned out to be 6 units less than the actual demand. The forecast for the next period is 75.8.
Informed Consent would be used in qualitative and quantitative research for data collection, and how each may impact it from a qualitative and quantitative standpoint
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