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Founder of modern probability and statistics theory Cardano asserted that if one throws a die three times the chance that a given number will show at least once is 50 percent. This is now recognized as the wrong answer. Calculate, what is a probability of at least one dice showing 6.
Make a forecast for 2004, using either the fitted trend model or a judgment forecast. Why is it best to ignore earlier years in this data set?
Multiple choice question based on multiple regression - The t value obtained from the table to test an individual parameter at the 5% level
We are interested in determining if the accident proportions differ between the two age groups:
Can we conclude at the 5% significance level that the population mean weight of athletic men is lower than the population mean weight of non-athletic men?
What is the rejection point at α = .10 and indicate if you would accept or reject H o ?
At.01 level of significance, is proportion of seeds which germinate dependent on seed type?
The width of a confidence interval will be:
When the conditionally and unconditionally expected values of a discrete random variable would be different?
Test the hypotheses that the average household income in the township is greater than $100,000. Hint: Start by stating the null and alternative hypotheses.
About 40% of the general population donate time and energy to community projects. Suppose 15 people have been randomly selected from a community and each asked whether he or she donates time and energy to community projects.
Determine the p-value; and at 95% confidence, test the above hypotheses.
Findout the margin of error for this survey if we want a 99 percent confidence in our estimate of the percent of adults over 50 who take vitamin supplements.
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