If 95% and 98% confidence intervals were developed to estimate the true cost of a MP3 player microwave, what differences would they have?
A) Standard errors
B) Interval widths
C) Z-statistic
D) Both b and c

Question

Quizplus · Accepted Answer

The 98% confidence interval would have a wider interval width than the 95% confidence interval because it requires a higher level of confidence. The Z-statistic would also be different between the two confidence intervals because it is used to calculate the interval width.

If 95% and 98% Confidence Intervals Were Developed to Estimate