Question

Find the z-value needed to calculate large-sample confidence intervals for the given confidence level. (Round your answer to two decimal places.)
confidence coefficient
1 − = 0.93

Answer 1

The z-value associated with a 93% level of confidence is 1.81

What is an equation?

An equation is an expression that is used to show the relationship between two or more numbers and variables. The Z-score measures how far a given value deviates from the standard deviation. The Z-score, also known as the standard score, is the number of standard deviations above or below the mean for a given data point.

The z score shows the deviation of the raw score from the mean. It is given by:z = (raw score - mean) / standard deviation

Given that:1 - confidence coefficient = 0.930.93 / 2 = 0.465

The z value that has an area of 0.465 is 1.81

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