A poll of 1200 people is taken. Find the margin of error assuming a 95% level of confidence

The test for a certain disease is 86% accurate.  A hospital tests a sample of 5000 patients for this disease and the incidence rate of the disease is 12%. Fill in the following table showing the results of this disease testing.   Disease No Disease Total Test Positive       Test Negative       Total       A. What percent of these patients tests positive? Round to the nearest 0.1%.   C. If a patient tests negative, what is the percent chance they have the disease? Round to the nearest 0.1%   D.Suppose you select a patient at random from this sample, what is the probability the patient has the disease or tests positive? Use three significant digits.

In 1995, it was determined that 78% of US citizens supported a ban on household aerosols.  Thinking that this proportion may have changed over the past few decades, a sample will be taken to test if a change has occurred. In a SRS of 500 citizens taken this year, 350 supported the ban.  Determine the pvalue associated with the test. find p value.

A pharmaceutical researcher wants to determine the proportion of people who believes that branded medicine is more effective than generic medicine. How many people should be sampled to be 95% confident that the estimate will be accurlte within 1% of the true population proportion?