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If you had the chance to set up a simple experiment at your workplace to test a hypothesis, would you have your research design focus on group comparison (e.g., t-test), pre-post change (e.g., paired t-test), or correlation between variables (e.g. Pearsons)? Why would you prefer this approach?
a distribution has a standard deviation of s 12. find the z- score for each of the following locations in the
1.in which of the following situations is bootstrapping and other resampling methods often used?a.when data have been
a survey has discovered that the amount of money that a family of four spends on food per week is approximately
A 25% loss with probability 0.1 ignoring all other losses what premium should the insurance company charge each season to realize an average profit of $500.
A manager wishes to find out whether there is a relationship between the number of radio ads aired per week and the amount of sales of a product. the data for the sample are shown below?
using alpha gt 0.05 a confidence interval for a population proportion is determined to be 0.15 to 0.35. if the
the closing stock price for each of two stocks was recorded over a 12-month period. the closing price for the dow jones
Explain with the help of a text or personal example, the use and application of Bayes' approach. Briefly, what is the history of Bayesian statistics
Test at the 1% significance level whether currently all adult men spend less than 11 hours per week watching sports on tv. Calculate the p-value for this problem and conduct the test using the p-value method.
Make a decision regarding the null hypothesis based on the sample information. Interpret the results of the test and state your conclusion.
Sample mean is 50, t-statistic is 1.96, and standard error of sample mean is 2. Determine the 95 percent confidence interval?
Random sample of 36 theaters resulted in mean of $7.80. Population standard deviation is $1.00. Determine conclusion can be made at 10% significance level? How about 5% significance level?
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