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What functions does the Pearson Coefficient have?
How important are Scatterplots in interpreting a correlation between variables?
Is there a method which is accepted across industries for determining the minimum size of a valid sample? N>50 +(8m aka 8 times the number of independent variables)
For which of the following situations is it appropriate to use a scatter diagram or scatter plot?
What is the probability of getting someone who is in the 23-30 age brackets or whom smokes?
You have two unbiased estimates, e 1 and e 2 , of a quantity with variances V 1 and V 2 respectively, and covariance Cov {e1,e 2 } = C. Form a new unbiased estimate:
Find the value of sample covariance in linear regression model
Set up hypothesis and two-tailed decision rule for right mean using 5% level of significance. Hypothesis for a two-tailed decision is?
Using the 0.95 degree of confidence, what is the interval estimate for the population proportion (to the nearest tenth of a percent)?
To evaluate average annual expenses of students on books and class materials sample size 36 is taken.
Assume you choose 20 houses at random. On average, how many houses of twenty would you expect to have DVD? Determine standard deviation of number of houses with DVD?
Determine the shape of chi-square distribution?
The level of significance indicates the probability of rejecting a false null hypothesis.
Construct a 95% confidence interval estimate of the population mean life of the light bulbs.
Can we conclude that the mean time for a game is less than 3.50 hours? Use the .05 significance level.
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