We randomly sample 600 people in a specific town. 342 of them like cats. Based on this, construct a 95% confidence interval for the true population proportion of people in this town who like cats.

In a survey of 3342 adults, 1489 say they have started paying bills online in the last year.   Construct a​ 99% confidence interval for the population proportion. Interpret the results.

From a lake, an unknown proportion of fish have been tagged.  You collect a sample of 100 fish taken from a lake, 57 fish in your sample are tagged. Based on this, construct a 90% confidence interval for the percentage of tagged fish in the lake.

In a survey of 3426 ​adults, 1487 say they have started paying bills online in the last year. Construct a​ 99% confidence interval for the population proportion. Interpret the results.

Claim: The mean systolic blood pressure of all healthy adults is less than 122 mm Hg. Sample data: For 269 healthy adults, the mean systolic blood pressure level is 121.74 mm Hg and the standard deviation is 15.02 mm Hg. Complete parts (a) and (b). a. Express the original claim in symbolic form. Let the parameter represent a value with respect to systolic blood pressure of a healthy adult.

If a school district takes a random sample of 50 Math SAT scores and finds that the average is 471, and knowing that the population standard deviation of Math SAT scores is intended to be 100. Find a 99% confidence interval for the mean math SAT score fo this district.

A student found that in a random sample of 300 people in a town, 105 play sports. Based on this sample, construct a 90% confidence interval for the population proportion of all people in the town who play sports.Give your answers as decimals, rounded to three decimal places.

In a survey of 3196 adults, 1405 say they have started paying bills online in the last year. Construct a​ 99% confidence interval for the population proportion. Interpret the results.

In a survey of 2588 ​adults, 1466 say they have started paying bills online in the last year.   Construct a​ 99% confidence interval for the population proportion. Interpret the results.

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.