One of the questions on a survey asked adults a series of questions on attitudes

One of the questions on a survey asked adults a series of questions on attitudes toward automation. The results showed that 2,979 out of 4,135 respondents are worried about a future in which robots and computers can do many human jobs; 2,772 are worried about the development of algorithms that can evaluate and hire job candidates; and 2,237 are worried about the development of driverless vehicles. (Round your answers to four decimal places.) (a)
Develop a point estimate of the proportion of respondents who are worried about a future in which robots and computer can do many human jobs.
(b)
Develop a point estimate of the proportion of respondents who are worried that the development of algorithms that can evaluate and hire job candidates.
(c)
Develop a point estimate of the proportion of respondents who are worried about the development of driverless vehicles.