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Q1) Recognize a research question from your research interests, professional life, or everyday experience that could be addressed by one-way ANCOVA. Explain the independent variable, covariate, and levels (groups) of each. Also, explain the dependent variable and its associated measurement scale and expected outcome. Point out why ANCOVA would be suitable analysis for this research question. Also, point to how effects of the covariate could be accomplished by methodological control (for instance, selection of subjects or assignment to groups) rather than statistical control.
If the estimate is to be within 8 mpg of the true mean with 98% confidence and the estimated standard deviation is 22 mph, how large a sample size must be taken?
Determine expected cell counts if null hypothesis is true and show them in a two-way table. Determine the chi-square() statistic?
Use MegaStat's output for multiple regression to determine the multiple regression equation
To sketch the 3-sigma X-bar chart and R-chart parameters. A candy bar manufacturer desires to set up a variables control chart for the net weight of its candy bars.
Determine the test value? Use α = 0.05. (Use the variances unequal formula).
A teacher gave a 25 question multiple choice test. After scoring the tests, she computed a mean and standard deviation of the scores. The standard deviation was 0. Based on this information
Formulate the hypotheses that can be used to test the validity of the brokerage firm executive's claim.
Find the maximum and minimum prices of the houses a contractor will build to include the middle 65% of the market.
Compute the mean and standard deviation of the scores and use these for the calculations below. Show your calculations on the back of his page.
Find a 95% confidence interval for the proportion p of the inner-city, working-class group who eventually became alcoholics.
What is the probability that no more than two of the three are commercial successes?
Perform a hypothesis test by using.04 level of significance to find out if there is a difference between the population means.
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