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A researcher conducts an experiment comparing three treatment conditions. The data consist of n=20 scores for each treatment condition.
a. If the researcher used an independent-measures design, then how many individuals were needed for the study and what are the df values for the F ratio?
b. If the researcher used a repeated-measures design, then how many individuals were needed for the study and what are the df values for the F ratio?
Mathml equation = $32,000 and mathml equation = $3000. If 100 teachers are randomly selected, find the probability that their mean salary is greater than $32,500.
A researcher is investigating the effectiveness of a new study-skills training program for elementary school children. A sample of n= 25 third grade children and each child is given a standardized achievement test at the end of the year.
Evaluate percentage of households in town with one or more cars; attach standard error to be evaluate. If this is no possible, describe why not.
36 values given here are based on summary statistics from research by cumming. Do you think that these data are normally distributed?
Use the permutations rule to determine the total number of different ways the winners can be drawn.
Find a 95% confidence interval for the mean price of all summer sleeping bags.
Give a 99% confidence interval for the proportion of all U.S. adults who attended church or synagogue during the week preceding the poll.
Construct a perfect one-factorization of K_2n for infinitely many values of n. Prove the factorizations are perfect
Based on the information about typical use, what is the probability that at least 25 of these women become pregnant in the next year? Is the Normal approximation permissible?
An account invested in a money market fund grew from $73,329.23 to $73,627.26 in a month. What was the interest rate to the nearest tenth?
Standard deviation was $15.50. For 56 Model B ovens, the mean repair cost was $85 and the standard deviation was $30. At alpha=.01, would you buy Model A?
Explain which data techniques you are most familiar with/have used: in a previously done project that involved the collection and analysis of data and explain why the examination of collected data is so important.
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