Question
For this problem, carry at least four digits after the decimal in your calculations. In a random sample of 63 professional actors, it was found
For this problem, carry at least four digits after the decimal in your calculations.
In a random sample of 63 professional actors, it was found that 39 were extroverts.
Let p represent the proportion of all actors who are extroverts.
Find a point estimate for p. (Round your answer to four decimal places.)
= 0.6190Find a 95% confidence interval for p. (Round your answers to two decimal places.)
lower limit =
upper limit=
In a marketing survey, a random sample of 1012 supermarket shoppers revealed that 280 always stock up on an item when they find that item at a real bargain price.
Let p represent the proportion of all supermarket shoppers who always stock up on an item when they find a real bargain. Find a point estimate for p. (Round your answer to four decimal places.)
=0.2767
Find a 95% confidence interval for p. ( Round your answers to three decimal places.)
lower limit =
upper limit =
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