Question

The score on the chapter 8 test is compared with a student’s chapter 2 test. If a claim about the scores not being different is tested, - Find the t test statistic. Name A B C D E Ch 8 40 42 50 45 46 Ch 2 40 35 40 42 45 D 0 7 10 3 1 Find the margin of error: Find the 95% confidence interval of the mean difference, . For a 90% confidence interval between the difference of 2 proportions (home runs per at bat), the following data was found: Team Red Sox Giants x, home runs 167 154 n, at bats 3250 3455 What is the critical value, ? What is the confidence interval? Find the test-statistic. Find the p-value of a test-statistics for the difference between two means, paired samples, given a test-statistic of t= 2.015, : > 0, n=19. Test the claim that the proportion of the students taking Math 13 is the same as it was 10 years ago. Today: x= 40, n= 100. 10 years ago: x=50, n= 125. Let α= .05. ᴧ Extra credit: For a pooled estimate, find p-hat, if =12, =18, =20, =28.

Answer 1