Recent surveys have shown a decline in the percentage of U.S. households with cable TV. In one city, a simple random sample of 468 households had 117 households reporting they had cable TV, and 351 households reporting they did not. (a) Show the “plug-in” box to represent our best guess for the relative frequency of people with and without cable. (Let 1 correspond to with cable and 0 without). (b) The percentage of households in the city with cable TV is estimated
Recent surveys have shown a decline in the percentage of U.S. households with
cable TV. In one city, a simple random sample of 468 households had 117
households reporting they had cable TV, and 351 households reporting they did
not.
(a) Show the “plug-in” box to represent our best guess for the relative frequency of
people with and without cable. (Let 1 correspond to with cable and 0 without).
(b) The percentage of households in the city with cable TV is estimated to be
___________%, and this estimate is likely to be off by about ___________% or so.
(c) A 90%-confidence interval for the percentage of households in the city with
cable TV goes from ___________% to ___________%.
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