Questions from Statistics Principles

Q: x = 80, n = 200, 98% confidence

x = 80, n = 200, 98% confidence

Q: x = 120, n = 500, 99% confidence

x = 120, n = 500, 99% confidence

Q: x = 400, n = 1200, 95% confidence

x = 400, n = 1200, 95% confidence

Q: x = 860, n = 1100, 94% confidence

x = 860, n = 1100, 94% confidence

Q: x = 540, n = 900, 96% confidence

x = 540, n = 900, 96% confidence

Q: In response to the Great Depression, Franklin D. Roosevelt enacted

In response to the Great Depression, Franklin D. Roosevelt enacted many New Deal policies. One such policy was the enactment of the National Recovery Administration (NRA), which required businesses to...

Q: A USA Today/Gallup poll asked l006 adult Americans how much

A USA Today/Gallup poll asked l006 adult Americans how much it would bother them to stay in a room on the 13th floor of a hotel. Interestingly, 13% said it would bother them. The margin of error was 3...

Q: A Rasmussen Reports national survey of l000 adult Americans found that 18

A Rasmussen Reports national survey of l000 adult Americans found that 18% dreaded Valentine’s Day. The margin of error for the survey was 4.5 percentage points with 95% confidence. Explain what this...

Q: A Gallup poll of 547 adult Americans employed full or part time

A Gallup poll of 547 adult Americans employed full or part time asked, “Generally speaking, would you say your commute to work is— very stressful, somewhat stressful, not that stressful, or not stress...

Q: A survey of 2306 adult Americans aged 18 and older conducted by

A survey of 2306 adult Americans aged 18 and older conducted by Harris Interactive found that 417 have donated blood in the past two years. (a) Obtain a point estimate for the population proportion of...