Instant Dinner comes in packages with weights that are normally distributed, with a standard deviation of 0.3 oz.
If 2.3% of the dinners weigh more than 13.5 oz, what is the mean weight?
If 2.3% of the dinners weigh more than 13.5 oz, what is the mean weight?
-
P(1 - .023) = z 1.99539331
z = 2
(13.5 - x) / .3 = 2
13.5 - x = .6
-x = -12.9
x = 12.9
z = 2
(13.5 - x) / .3 = 2
13.5 - x = .6
-x = -12.9
x = 12.9