Posted by **Nezar** on Saturday, December 10, 2011 at 9:02am.

2

Packets of crisps from a production line have a weight distribution that is normal with a mean of 50.0 grams and a standard deviation of 2.0 grams. Samples are taken of size 36.
What is the probability that a sample mean is less than 49.0 grams? (Give answer to four decimal places.)

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