Ch 5, 6, 7, Questions 4

Question

A normal distribution has a mean of 98 and a standard deviation of 5. Find the z-score for a data value of 100.

 Round to two decimal places

Answer 1

I have provided the solution for this problem in this video. Check it out and let me know if you have any questions. Take care!

-Dr. Christal-Joy Turner

Answer 2

Z = (X-μ)/σ = (100-98)/5 = 2/5 = 0.4

Therefore, the z-score for 100 is 0.4, or 0.4 standard deviations above the mean.

Hope this was helpful!