Question

Lesson 5.7: Summary of Inference Methods 5 Complete problem 5 from this lesson. Interpret your result. You believe that the mean age of Republican voters is different from the mean age of Democratic voters. To prove your belief, you randomly sample 127 Republican voters and observe a mean age of 52 years with a sample standard deviation of 17 years. From another random sample of 185 Democratic voters. the mean age is 48 years with a sample standard deviation of 21 years. Test your claim at 4 % significance. There are 301 degrees of freedom in the appropriate probability distribution 6 Complete problem 6 from this lesson. Interpret your result. From a random sample of 80 women, 48 say they have been sexually harassed. From another random sample of 65 men, 13 say they have been sexually harassed. Construct a 99 % confidence interval for the difference between the proportions of women and men who say they have been sexually harassed. Statway Version 3.1, O 2018 WestEd. All rights reserved. 5.71 11

Answer 1

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