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open the StatCrunch file Housing_Prices_Categorical_Factors. The varia bles in the file are explained in the file description in StatCrunch. Look at the description of the variables in the file and the variables themselves and develop a "research question" that might be interesting to explore using this data set. Some examples are: . Is there a difference in average selling price based on whether the house is on the water front or not? . Do new houses sell for more than old houses? NOTE: For something like this, you would have to define what you mean by new and old. Develop your own research question and post it on the Discussion Board. Be Creative! In addition to posting your question, also tell what method or methods you would use to answer your question.
Given the following number of hours between breakdowns for 4 machines, are the machines significantly different? If so, how are they different? Which machine is the best?
A random sample of 15 college graduates revealed that they worked an average of 5.3 years on the job before being promoted. The sample standard deviation was 1.2 years. Using the 0.95 degree of confidence, what is the confidence interval for the p..
Constructing a 95% confidence interval for the true length of time for all pepper seeds to germinate you must calculate the margin of error. The margin of error in this case is 0.60.
Suppose the weights of full boxes of a certain kind of cereal are normally distributed with a population standard deviation of 0.29 ounces.
Salaries upon graduating than are graduates of other programs. Describe a statistical experiment that could help test your belief.
Derive the standard error of proportion, the margin error and the 95% confidence interval for the proportion indicating preference to flirting.
calculate the mean or expected value for the number of retransmissions and calculate the standard deviation for the number of retransmissions.
Which promises the profit of $24,000 with the probability of .7 or a loss (due to bad weather, strikes, and such) of $8000 with the probability of .3. Determine the expected profit?
To find the probability values in case of raw data, binomial, normal
Suppose you found that in doing the hypothesis test, you were able to reject the null hypothesis. What is the most appropriate conclusion to draw?
Explain, to a person who has never had a course in statistics, what you have done. (c) Note the ways in which the means and standard deviations differ.
Four different paints are advertised as having the same drying time. To check the manufacturer's claims, five samples were tested for each of the paints.
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