Rock-paper-scissors is a hand game played by two or more people where players choose to sign either rock, paper, or scissors; with their hands. We would like to test if players choose between these three options randomly, or if certain options are favored above others. What hypothesis test should we conduct to answer this research question?   Compare two means Compare two proportions Chi square test of independence Chi square test of goodness of fit

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A: Type I error: The probability of rejecting the null hypothesis when it is actually true.

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.