Mathematics, 26.03.2021 03:30, jaass28

A poll conducted in 2013 found that 55% of U. S. adult Twitter users get at least some news on Twitter (Pew, 2013). The standard error for this estimate was 2.2%, and a normal distribution may be used to model the sample proportion. Construct a 99% confidence interval for the fraction of U. S. adult Twitter users who get some news on Twitter, and interpret the confidence interval in context. (please round all percentages to 2 decimal places)

Answers: 1

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 16:00, pillgiing

Determine the relationship of ab and cd given the following points

Answers: 2

continue

Mathematics, 22.06.2019 00:30, tubbs45

Carl is hanging pictures in his home. there is a space on a wall that has a width of 4 feet. carl has pictures with different widths. which picture width would fit in the space on the wall? a. 46 inches b. 60 inches c. 50 inches d. 54 inches

Answers: 1

continue

Mathematics, 22.06.2019 00:30, krojas015

The power generated by an electrical circuit (in watts) as a function of its current c (in amperes) is modeled by p(c)= -15c(c-8) what current will produce the maximum power?

Answers: 1

continue

Mathematics, 22.06.2019 03:50, jescanarias22

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.

Answers: 3

continue

Do you know the correct answer?

A poll conducted in 2013 found that 55% of U. S. adult Twitter users get at least some news on Twitt...