A 95% confidence interval computed from a sample of size 50 will have a greater margin of error than a 91% confidence interval computed from a sample of size 50. O true O false

A simple random sample of 300 U.S. adults indicated that 11% approve of attempts to clone a human. Calculate a 95% confidence interval using the results of the survey.

A 99% confidence interval guarantees that the true population mean value lies within this confidence range around the measured mean True False

In a survey of 508 adults, 317 indicated that emails can be easily misinterpreted. If we wish to construct a 95% confidence interval to estimate the true proportion of adults who believe that emails can be easily misinterpreted we would substitute a. P hat is equal to  b. Z is equal to

A newspaper article reported that 400 people in one state were surveyed and 70% were opposed to a recent court decision. The same article reported that a similar survey of 500 people in another state indicated opposition by only 40%. Construct a 95% confidence interval of the difference in population proportions based on the data.

Suppose you are planning an experiment and a sample has yet been selected. For this experiment you plan on taking a SRS of 50 mice with pancreatic cancer measuring a particular hormone level. What would be the impact on a 95% confidence interval calculated from the experiment on these mice if instead of a SRS of 50 mice, a SRS of 200 mice were taken?

In a study of treatments for very painful​ "cluster" headaches,... Find the 90% confidence interval using technology.

A random sample of high school seniors were asked whether they were applying for college. The resulting confidence interval for the proportion of students applying for college is (0.65,0.69). What is the margin of error?

Find the critical value for a 98% confidence interval. Then calculate the interval.

What effect would increasing sample size have on a confidence interval?  What effect would decreasing sample size have on the margin of error?