AI Tutor
Back to Inference for categorical data

Exercise 25

Avg difficulty 3.0

Offshore drilling, Part II. Results of a poll evaluating support for drilling for oil and natural gas off the coast of California were introduced in Exercise 6.23.

College Grad
Yes No
Support 154 132
Oppose 180 126
Do not know 104 131
Total 438 389

  1. What percent of college graduates and what percent of the non-college graduates in this sample support drilling for oil and natural gas off the Coast of California?

  2. Conduct a hypothesis test to determine if the data provide strong evidence that the proportion of college graduates who support off-shore drilling in California is different than that of non-college graduates.

Diez, Barr & Çetinkaya-Rundel, OpenIntro Statistics, Inference for categorical data, End-of-Chapter Exercises, Exercise 25

AI Tutor

Adapted from OpenIntro Statistics © 2019 David Diez, Mine Çetinkaya-Rundel & Christopher D. Barr. Licensed under CC BY-SA 3.0. Source: OpenIntro Statistics. Imported at revision fee2509.