Question

TV advertising agencies face increasing challenges in reaching audience members because viewing TV programs via digital streaming is gaining in popularity. A poll reported that 57% of 2343 American adults surveyed said they have watched digitally streamed TV programming on some type of device.

(a) Calculate and interpret a confidence interval at the 99% confidence level for the proportion of all adult Americans who watched streamed programming up to that point in time. (Round your answers to three decimal places.)

( __________ , __________ )

Interpret the resulting interval. (Choose of the following)

1. We are 99% confident that this interval does not contain the true population proportion.

2. We are 99% confident that this interval contains the true population proportion.    

3. We are 99% confident that the true population proportion lies above this interval.

4.We are 99% confident that the true population proportion lies below this interval.

(b) What sample size would be required for the width of a 99% CI to be at most 0.06 irrespective of the value of p̂? (Round your answer up to the nearest integer.)

____________

Answer 1

In tewe 42.5H 0.57 ±0-8213 0S437,.5463 9.572 s4-65) ob