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Compare the effectiveness of three methods of teaching (IV). You plan to administer a standardized test (DV measured on an interval scale measuring knowledge acquisition) to the students in three classes with each class using a different teaching method.
What statistical test could I use and why?
What is the best method for assigning samples to the following hypothesis?
A class that uses one of three methods of teaching will have an increase in the level of knowledge acquisition.
The cheetahs' coach believes that the Rockets' times are normally distributed as well. Construct a 95% confidence interval the Coach to compare the two teams' sprint units.
Determine a 95% confidence interval for true time battery pack can function before having to be recharged.
Perform a contingency analysis on the data to determine if there is any dependency between the number of level of education attained by the father and the size of his family.
What critical value should the company officials use to determine the rejection region?
For adults 60 years or older, they found a mean daily intake of 721 mg with a standard deviation of 454 mg. Using these values for the mean μ and standard deviation σ for the U.S. population:
A coin was flipped 60 times and came up heads 38 times. (a) At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations. (b) Calculate a p-value and interpret it.
Computing the mean, standard deviation values for the given data - Describe how statistics is being misused in this situation
To determine whether there is a difference in the proportion of viewers watching the three channels.
Develop a 99 percent confidence interval for the population proportion.
Calculate the appropriate test statistic to test the hypotheses related to the concern and test at 5% and 1% (indicate which test you are performing; show the hypotheses, the test statistic and the critical values and mention whether one-tailed or..
A company tracked the number of complaints it received during the first 6 months of last year, as shown in the following table:
What purpose does a multiple regression analysis serve? Give an example of how it might be used in marketing research.
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