1. The amount of pyridoxine (in grams) per multiple vitamin is normally distributed with = 110 grams and = 25 grams. A sample of 25 vitamins is to be selected. So, 95% of all sample means will be greater than how many grams?

Question

1.	The amount of pyridoxine (in grams) per multiple vitamin is normally distributed with   = 110 grams and   = 25 grams. A sample of 25 vitamins is to be selected. So, 95% of all sample means will be greater than how many grams?

PsyDAG · Answer

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the Z score related to that proportion.

Insert that value into this equation.

Z = (score-mean)/SD

Solve for the value of the score in grams.