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Question - Apartment rental rates. You hope to rent an unfurnished one-bedroom apartment in Dallas next year. You call a friend who lives there and ask him to give you an estimate of the mean monthly rate. Having taken a statistics course recently, the friend asks about the desired margin of error and confidence level for this estimate. He also tells you that the standard deviation of monthly rents is about $300.
(a) For 95% confidence and a margin of error of $100, how many apartments should the friend randomly sample from the local newspaper?
(b) Suppose that you want the margin of error to be no more than $50. How many apartments should the friend sample?
(c) Why is the sample size in part (b) not just four times larger than the sample size in part (a)?
Pearson Correlation cannot be used to identify non-linear relationships between two variables.
What are the pros and cons of selecting an established theoretical or conceptual model or framework? What are the pros and cons of creating/developing your own?
Determine the proportion of homes that have a pool. At the .05 significance level, can we conclude that less than 40 percent of the homes sold in the Denver area had a pool? What is the p-value?
Is there sufficient data to determine that these student data reflect population data? Determine using alpha .05 as critical value.
In 1997, a survey of 900 households showed that 151 of them use e-mail. Use those sample results to test the claim that more than 15% of households use e-mail. Use a 0.05 significance level. Use this information to answer the following questions?..
It labels the top 5% (the heaviest 5%) overweight. How heavy does a box have to be for it to be labeled overweight? Round your answer to the nearest hundredth.
Does this provide evidence that there's a difference in retention rates of firstyear students at public and private colleges?
What is the relevance of Pearson's r? What does it tell you about the correlation between variables? What is one example of a null hypothesis and the research hypothesis that goes with it?
type your question here the five summery for production order size in thousends pounds for steel tubing is min16.5 q132
A randomized experiment was done in which overweight men were randomly assigned to either exercise or go on a diet for a year.
the management of the ceebler fairy corporation is considering relocating the corporate office to a new location
Find a 90% confidence interval for the mean decibel level µ for this type of transit vehicle.
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