A Manager of a Local Store Wants to Estimate the Mean

Multiple Choice

A manager of a local store wants to estimate the mean amount spent per shopping visit by customers. Summary statistics from a sample taken reveal the following: If 90% and 95% confidence intervals were developed to estimate the true shopping expenditure, what similarities would exist?

A) Point estimates
B) t-values would be the same
C) Standard errors
D) Both point estimates and standard errors
E) Both point estimates and t-values