Question

An air gap exists between fluids in a bottle and the cap of the bottle. At a firm producing olive oil, the gap is critical to the shelf life of their product. If the recent information reveals that the average gap is 9.46 mm with a standard deviation of 0.233, calculate the percentage of product above and below the specification limits of 9.5 +/- 0.5 mm.

Answer 1

The police department of a major city has found that the average height of their 1250 officers is 71 inches with 2.3 inches. How many officers are at least 75 inches tall?

Answer 2

Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability for ± Z score. Multiply by 100.

Answer 3

First, if you have a question, it is much better to put it in as a separate post in <Post a New Question> rather than attaching it to a previous question, where it is more likely to be overlooked.

Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability of the Z score. Multiply by 1250.