normal distribution?

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normal distribution?

The weight of a product is normally distributed with a mean 5 ounces. A randomly selected unit of this product weighs 7.1 ounces. The probability of a unit weighing more than 7.1 ounces is .0014. The production supervisor has lost files containing various pieces of information regarding this process including the standard deviation. Determine the value of standard deviation for this process.

2006-07-25 00:23:46 · 1 answers · asked by Dogs Mom 3 in Education & Reference ➔ Homework Help

1 answers

sd = 0.7026

Im sure the right way to do it is found out how many SD's produces a probability of 0.14% and then divide that number into 7.1 - 5 = 2.1

Therefore, working backwards, I assume the # of sd's was 2.989

Sorry for the unelegant solution.

2006-07-25 10:51:17 · answer #1 · answered by Will 4 · 0⤊ 0⤋