Question

In a recent survey of 100 adults, 56 stated that they were getting the recommended 8 hours of sleep each night. Assuming the distribution is approximately normal, find the point estimate and standard error for the proportion of adults who are getting the recommended amount of sleep each night.

• Round your answers to three decimal places, as needed.

Answer 1

solution

n = 100

x = 56

= x / n = 56 /100 = 0.560

point estimate   = 0.560

1 - = 1 - 0.560 = 0.440

standard error =  (( * (1 - )) / n)

=  ((0.560 * 0.440) / 100)

answer   = 0.050