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1) What is an F-ratio? Define all the technical terms in your answer.
2) What is error variance and how is it calculated?
3) Why would anyone ever want more than two (2) levels of an independent variable?
4) If you were doing a study to see if a treatment causes a significant effect, what would it mean if within groups variance was higher than between groups variance? If between groups variance was higher than within groups variance? Explain your answer
5) What is the purpose of a post-hoc test with analysis of variance?
6) What is probabilistic equivalence? Why is it important?
A normal population has a mean of 60 and a standard deviation of 3. You select a sample of 36. Compute the probability the sample mean is (Round z values to 2 decimal places and final answers to 4 decimal places):
The distribution of 9 ounce bags of a particular bag of potato chips is approximately Normal with a mean of 9.12 ounces and a standard deviation of 0.15 ounces.
Genetics of peas. According to genetic theory, the blossom colour in the second generation of the certain cross of sweet peas should be red or white in a 3:1 ratio. That is, each plant has probability 3/4 of having red blossoms, and the blossom co..
For a new HDTV the mean number of months until repairs are needed is 36.84 with a standard deviation of 3.34 months.
Calculate a 95% confidence interval for the population mean, based on the sample 10, 12, 13, 14, 15, 16, and 49.
Calculate the mean, mode and median of the grouped data derived from the frequency distribution above. Compare the results obtained from
Name three elements of the inferential statistical analysis.
What extremely important characteristic of the data set is not considered in the hypothesis test?
Find out the probability distribution, and the cumulative probability distribution of car arrivals.
20% of teenagers in a small town say they like reading news online. Suppose you randomly select 7 teenagers from the town and ask them whether or not they enjoy reading news online. Find the probability that at least 3 say they enjoy reading news ..
What IQ score should one have in order to be eligible for Mensa?
Below you are given a partial computer output based on a sample of 16 observations.
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