CFA Practice Question

There are 434 practice questions for this study session.

CFA Practice Question

A survey of 144 retail stores revealed that a particular brand and model of TV retails for $375 with a standard deviation of $20.

If 95% and 98% confidence intervals are developed to estimate the true cost of the TV, what difference would they have?
A. interval widths
B. both interval widths and z-variates
C. z-variates
Explanation: The interval widths and the z-variates differ according to the rule chosen. The standard error is the same regardless.

User Contributed Comments 2

User Comment
smackboyg What is a z-variate? I cannot find a reference?
GBolt93 I'm assuming it means z-value you'd use in calculating the interval. i.e. 1.96 for 95% and 2.33 for 98%
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