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A house seller has been told that, other factors being equal, a house that is older (than another house) should be less valuable (due to normal wear and tear). At 1% level does the regression provide convincing evidence to refute this theory? What is the prob-value for the test?
The house is 1800 square foot, 1 story, 1.5 bath mansion, built 6 years earlier and not walking distancce from the church. For 40 observations regression data is:
Rsquare = .88180
Standard Error = 14.32339
n-k-1 df = 34
Age coef = 1.15516, Age Stand Error = .55264
Suppose that you want to know the opinions of American secondary school teachers about establishing a national test for high school graduation.
1.nonparametric tests are used whena.the data are normal.b.the data are skewed.c.the data are counts.2.the
All subjects in the study were questioned about lifestyle factors including alcohol, tea, and coffee consumption. The resulting data are as follows.
Claudia's scores in this game are (approximately) normally distributed with a mean of 110 and a standard deviation of 15. a) Who is more likely to score above
question the temperature in january is estimated to have a mean of 34 and a standard deviation of 6 in degrees
Calculate the 95% confidence interval for the true population proportion of consumers who like the ads. Calculate the 90% confidence interval for the true population proportion of consumers who like the ads. You would like your margin of error to be ..
Kim and her sister Karen each plan to have four children. Assume that the probability of a girl is .50, independent across births.
Create a hypothesis test which will investigate the variances. Label all steps for your test and show and label each step of the test procedure at a .1 level of significance.
If only 1.1% of the bus drivers have a weekly income of more than $429.35, what is the value of the standard deviation of the weekly earnings of the bus drivers?
A firm specializing in the processing of rebate certificates has tabulated the frequency of occurrence of various types of problems, as shown in Table.
Using this he gives a cost estimate of $24,000 for a new order for 500 units. Is this a reasonable cost estimate? Explain why or why not. Looking at the data on file, can you give a better cost estimate?
You have just sent out a test mailing of a catalog to 1,000 people randomly selected from a database of 12,320 addresses.
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