Suppose I gave my statistics class a four question, multiple choice quiz at the beginning of the semester to measure how well prepared they were for the class. The following table shows the number of students who had 0, 1, 2, 3, and 4 questions correct:
Using α = 0.05, perform a chisquare test to determine if the number of correct answers per student follows the binomial probability distribution.
Answer to relevant QuestionsIn Chapter 8 we examined confidence intervals. Recall that to construct a confidence interval for the mean when the population standard deviation is unknown, the population must follow the normal probability distribution. To ...Consider the following contingency table of observed frequencies: a. Identify the null and alternative hypotheses for a chisquare test of independence based on the information in the table. b. Calculate the expected ...Consider the following observed frequencies: Calculate the expected frequency for each observed frequency. The following table shows the frequency distribution for the number of spam emails I’ve received over the last 75 days: a. Using α = 0.10, perform a chisquare test to determine if the number of spam emails per day follows ...A random sample of 150 new car buyers who purchased Ford, General Motors (GM), and Chrysler models was selected, and their ages were recorded. The following table shows these data: a. Using α = 0.05, perform a chisquare ...
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