Question

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

The weights of bags of ready-to-eat salad are normally distributed with a mean of 290 grams and a standard deviation of 10 grams.

What percent of the bags weigh less than 280 grams?

Answer 1

Answer: b) 16%

Explanation:

The mean is 290 so on a normal bell curve that would be a z-score of 0.

The standard deviation is 10 so 290 - 10 = 280 is a z-score of -1.

A z-score from the left to -1 is 15.9%