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.)

= 0.6190

Find 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 =