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The Youth Risk Behavior Survey was determined to have an internal consistency of the total knowledge questionnaire of 0.81. What does that mean?
a regression equation was fit to a set of data for which the correlation r between x and y was 0.6. which of the
samples of our students from an applied experimental design class were polled regarding the number of hours they spent
A citrus company is interested in evaluating the performance of two orange juice extractors, A and B. It is believed that both the size and the variety of the fruit yield in the test may influence the yields (percentage juice by weight) obtained f..
Use a two-factor ANOVA to analyze these data and interpret your results. The data are not currently set up correctly for doing a two-factor ANOVA in Excel, so you will likely need to rearrange them
A random sample of 81 credit sales in a department store showed an average sale of $68.00. Historically, it is known that the standard deviation of the population is $27.00.
Q1) What is the importance of statistical data analysis? Q2) What is the appropriate published literature in your area of research?
a random sample of 6 music majors playing song s counted the number of mistakes each made. then these musicians played
If you wish to test the effectiveness of a newly designed Web page in regard to its download time, how will you set up the null and alternative hypotheses?
Standard deviation of 44.7 mg/dL. Let x signify serum total cholesterol level for U.S. females 20 years old or older. Draw the distribution of the variable x.
Consider a level α = .10 test of H0 (8.1) versus the alternative τ > 0 based on K. How many bivariate observations (n) will we need to collect in order to have approximate power at least .95 against an alternative for which τ = .6?
the breaking strength of threads has a standard deviation of 18 grams. how many measures on breaking strength should be
Once production is set up, 80 units can be produced per day. Daily demand rate for the units is 60 per day. a. What is the most economical number to produce per production run? b. How long is each production cycle?
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