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Mathematics, 04.11.2019 22:31 tony001
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 55% of 2341 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.
we are 99% confident that this interval does not contain the true population proportion.
we are 99% confident that this interval contains the true population proportion.
we are 99% confident that the true population proportion lies below this interval. we are 99% confident that the true population proportion lies above this interval.
(b) what sample size would be required for the width of a 99% ci to be at most 0.03 irrespective of the value of p? ? (round your answer up to the nearest integer.)
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