Concept explainers
(a)
To find: The point estimate for proportion of all Democrats who prefer steak as their favorite barbeque food.
(b)
To find: The point estimate for proportion of all Republicans who prefer steak as their favorite barbeque food.
(c)
To find: The point estimate for the difference between the proportion of all Democrats and all Republicans who prefer steak as their favorite barbeque food.
(d)
To construct: The 95% confidence intervalfor the difference between the proportion of all Democrats and all Republicans who prefer steak as their favorite barbeque food.
(e)
To interpret: The result of part d.
(f)
To explain: The meaning of 95% confidence for part e.
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