The z-score or z-value corresponding to a 95.34% confidence interval is ________.
A)1.96
B)1.65
C)1.99
D)1.68

Question

Quizplus · Accepted Answer

The z-score corresponding to a 95.34% confidence interval can be calculated using a z-table or a calculator. We must find the area to the left of the z-score that contains 95.34% of the normal distribution. This is equivalent to finding the area to the right of the z-score that contains (100% - 95.34%) = 4.66% of the normal distribution.

Looking at the standard normal distribution table, we can find that the closest value to 4.66% is 0.0461, which corresponds to a z-score of 1.99. Therefore, the z-score for a 95.34% confidence interval is 1.99, which corresponds to choice C.

The Z-Score or Z-Value Corresponding to a 95