If 95 and 98 confidence intervals were developed to estimate

If 95% and 98% confidence intervals were developed to estimate the true cost of an MP3 player with a known standard deviation, what differences would they have? A. The sample sizes would be different. B. The standard errors would be different. C. The point estimates of the population mean would be different. D. The z statistics would be different.

The correct answer is: D

The Z-statistics would be different.