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
The point estimate for μ, the mean number of weekly hours that U.S. adults use computers at home, can be calculated using the sample mean, which is given in the information provided.
In this case, the sample mean is 8.5 hours. So, the point estimate for μ is 8.5 hours.
Therefore, the correct answer is "8.5".