How is the expected frequency of a category calculated for a goodness-of-fit test? What are the degrees of freedom for such a test?
Answer to relevant QuestionsThe following table lists the frequency distribution for 60 rolls of a die. Test at a 5% significance level whether the null hypothesis that the given die is fair is true. Home Mail Corporation sells products by mail. The company’s management wants to find out if the number of orders received at the company’s office on each of the 5 days of the week is the same. The company took a sample ...Consider the following contingency table, which records the results obtained for four samples of fixed sizes selected from four populations. a. Write the null and alternative hypotheses for a test of homogeneity for this ...Two drugs were administered to two groups of randomly assigned 60 and 40 patients, respectively, to cure the same disease. The following table gives information about the number of patients who were cured and not cured by ...A sample of 21 observations selected from a normally distributed population produced a sample variance of 1.97. a. Write the null and alternative hypotheses to test whether the population variance is greater than 1.75. b. ...
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