Question

A data set follows a normal distribution. The mean of the data set is 90 and the standard deviation of the data

set 15 1.6. Find a z-score for a data value of 91 from the set.
Round your answer to two decimal places.
Video: Z Score Formula A data set follows a normal distribution. The mean of the data set is 90 and the standard deviation of the data set is 1.6. Find a Z-score for a data value of 91 from the set. Round your answer to two decimal places. Submit Question

Answer 1

To find the z-score for a data value of 91 from the set, we use the formula:

z = (x - μ) / σ

where x is the data value, μ is the mean, and σ is the standard deviation.

Substituting the given values, we get:

z = (91 - 90) / 1.6 = 0.63

Therefore, the z-score for a data value of 91 from the set is 0.63. Rounded to two decimal places, the z-score is 0.63. Answer: 0.63.