study of 30 college students showed that 25 are binge watching series. Find a 95% confidence interval for the proportion of students that are binge watching seri

A survey showed 980 of 1500 adult respondents believe in global warming. Construct a 95% confidence interval estimate of the proportion of adults believing in global warming.

The manager at Bell’s Gym wants to know the proportion of members who use the Cardio Machines. A sample of 260 members showed that 40 of them use cardio machines. Calculate a 97% confidence interval for the proportion of members who use the cardio machines.

When 410 randomly selected college students were surveyed, 155 said they own their car. Construct a 95% confidence interval for the proportion of college students who say they own their cars. Include a statement interpreting your answer.

In a random survey of 2221 North Americans 689 of them had blood type A+. Construct a 94% Confidence Interval for the true proportion of North Americans who have blood type A+.

In a random sample of 250 high school students, it was found that 85.2% (213) of them later graduated. Find the 95% and 98% confidence interval for the true proportion of all high school students who graduate. Compare the two proportions.

Assume a nationwide random survey of 800 adults asked about attitudes toward “alternative medicine” such as acupuncture, massage therapy, and herbal therapy. Among the respondents, 448 said they would use alternative medicine if traditional medicine was not producing the results they wanted. Give a 99% confidence interval for the proportion of all adults who would use alternative medicine.

Of 848 children surveyed, 144 plan to join a volunteer group in the future. Construct a 90% confidence interval for p.

thirteen out of the 147 randomly selected faculty members who were surveyed at a communty college know sign language. construct and interpret a 90% confidence interval for the proportion of all faculty members at the communty college who know sign language.

A survey of 80 recent arcanum students showed that 46 were ready for summer break. Find the 95% confidence interval of the true proportion of students ready for summer break.