A study was conducted in order to estimate μ, the mean number of weekly hours that U.S. adults use computers at home. Suppose a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours and that from prior studies, the population standard deviation is assumed to be σ = 3.6 hours.
Question 2
Select one answer.
10 points
Based on this information, what would be the point estimate for μ?
81
8.5
3.6
None of the above.
8.5
To find the point estimate for μ, the mean number of weekly hours that U.S. adults use computers at home, we use the given information that a random sample of 81 U.S. adults gives a mean weekly computer usage time of 8.5 hours.
So, the point estimate for μ would be 8.5 hours.
Therefore, the correct answer is 8.5.