A survey of 144 retail stores revealed that the average price of a DVD was $375 with a standard error of $20. If 90% and 95% confidence intervals were developed to estimate the true cost of the DVD, what similarities would they have?
A) Point estimates
B) Z-values would be the same
C) Standard errors
D) Both "a" and "c"
E) None of the choices are correct

Question

Quizplus · Accepted Answer

The point estimates and standard errors would be the same for both confidence intervals.

A Survey of 144 Retail Stores Revealed That the Average