Question

Please help me, I have know idea how to do this and the assignment is due today!

A manufacturer is producing metal rods, whose lengths are normally distributed with a mean of 75.0cm and a standard deviation of 0.25cm. If 3000 metal rods are produced how many will be between 74.5cm and 75.5 cm in length?

The question is worth4 marks. Thanks in advance
Ms. Sue
Mandy/Mary/Jenny -- are you suffering an identity crisis?

Please use the same name for your posts.
... and Candice and Cherie (yesterday).

=(
Google David Lane normal distribution
http://davidmlane.com/hyperstat/z_table.html

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