Question

Find a 90% confidence interval for a population mean μ for these values. (Round your answers to three decimal places.)

(a) n = 120, x = 0.83, s² = 0.088

________ to ________

(b) n = 60, x = 23.7, s² = 3.21

________ to _________

(c) Interpret the intervals found in part (a) and part (b).

A. In repeated sampling, 10% of all intervals constructed in this manner will enclose the population proportion.

B. There is a 90% chance that an individual sample proportion will fall within the interval.    

C. In repeated sampling, 90% of all intervals constructed in this manner will enclose the population mean.

D. 90% of all values will fall within the interval.

E. There is a 10% chance that an individual sample proportion will fall within the interval.

Answer 1