For the question please write down the detailed steps of calculation and reasoning; interpret your results to answer the question

Do you think global warming will have an impact on you during your lifetime? A CBS News/New York Times poll of 1000 adults in the United States asked this question (CBS News website, December, 2014). Consider the responses by age groups shown below.

Response 18-29 30+

Yes 134 293

No 131 432

Unsure 2 8

a. What is the probability that a respondent 18-29 years of age thinks that global warming will not pose a serious threat during his/her lifetime (to 4 decimals)?

b. What is the probability that a respondent 30+ years of age thinks that global warming will not pose a serious threat during his/her lifetime (to 4 decimals)?

c. For a randomly selected respondent, what is the probability that a respondent answers yes (to 3 decimals)?

d. Based on the survey results, does there appear to be a difference between ages 18-29 and 30+ regarding concern over global warming?