(Solved): Given the values n = 110, x = 0.87, n21 = s2 = 0.081 in a ...

Given the values n = 110, x = 0.87, ?ˆn2?1 = s2 = 0.081 in a sample

(I) find a 90% confidence interval for a population mean ?. (Round your answers to three decimal places.)

(II) Indicate the correct interpretation of the interval that you have constructed:

1. (a)  90% of all values will fall within the interval.

2. (b)  In repeated sampling, 90% of all intervals constructed in this

   manner will enclose the population mean;

3. (c)  In repeated sampling, 10% of all intervals constructed in this manner will enclose the population mean;

4. (d)  There is a 10% chance that an individual sample mean will fall within the interval.;

5. (e)  There is a 90% chance that an individual sample mean will fall within the interval.