Question

The diameters of ball bearings are distributed normally the main diameter is 135 ml and the variance is non-find the probability that the diameter of a selected bearing is greater than 130 ml round your answer to four decimal places

Answer 1

To find the probability that the diameter of a selected bearing is greater than 130 ml, we can use the normal distribution.

Step-by-step explanation:

The problem states that the diameters of ball bearings are distributed normally with a mean diameter of 135 ml and a non-find variance. To find the probability that the diameter of a selected bearing is greater than 130 ml, we can use the normal distribution. First, we need to calculate the z-score using the formula:

z = (X - mean)/standard deviation

Plugging in the values X = 130, mean = 135, and standard deviation = √non-find variance, we can calculate the z-score. Once we have the z-score, we can look up the corresponding probability using a normal distribution table or a calculator. The probability of the diameter being greater than 130 ml can be rounded to four decimal places.