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

Question

Quizplus · Accepted Answer

The interval widths of the two confidence intervals would differ because the wider interval has a higher level of confidence. The z-variates for the two intervals would also differ; a 95% confidence interval would have a z-variates of ±1.96, while a 98% confidence interval would have a z-variates ±2.33. Therefore, choices B and C are correct. Standard errors would be the same for both confidence intervals since they are based on the same sample data.

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