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May 29, 2015

Homework Help: statistics

Posted by GiNa on Wednesday, September 29, 2010 at 7:49am.

The weights of individual nails produced by the 'Hammer 'n Nail' hardware company follow a normal distribution with the average nail weight being 5.1 grams and the standard deviation in nail weight being 1.6 grams. When a nail is produced it is discarded if it weighs more than 8.268 grams. Calculate the probability that a randomly selected nail is not discarded. You may find this standard normal table useful. Give your answer as a decimal to 4 decimal places.

Probability =

ive calculated the z score to be 1.98 but i dont know what to do after this. Please help

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