For the same sample statistics which level of confidence wou

For the same sample statistics, which level of confidence would produce the widest confidence interval? Explain your reasoning.

A. 98% because as the level of confidence increases, z_c increases.

B. 98% because as the level of confidence increases, z_{c decreases.}

_C. 95% because as the level of confidence decreases, z_c increases.

D. 95% because as the level of confidence decreases,  z_{c decreases.}

Solution

Larger confidence levels produce WIDER confidence intervals, as the critical z value increased with the confidence level.

hence, it is OPTION A. [ANSWER, A]