SilentJay
12-10-2010, 04:14 PM
I've been staring furiously at this question, and just can't seem to figure it out. Can anyone chime in please? Brain is turning into mush...
Use Excel’s NORMINV function to answer the following questions:
Quarters have weights that are normally distributed with a mean of 5.67g and a standard deviation of 0.64g. A vending machine is designed only to accept quarters with weights in the middle 95% (rejecting quarters with weights in the top or bottom 2.5%). (Round all answers to 2 decimal places).
4. Find the minimum weight for a quarter to be accepted.
5. Find the maximum weight for a quarter to be accepted.
Use Excel’s NORMINV function to answer the following questions:
Quarters have weights that are normally distributed with a mean of 5.67g and a standard deviation of 0.64g. A vending machine is designed only to accept quarters with weights in the middle 95% (rejecting quarters with weights in the top or bottom 2.5%). (Round all answers to 2 decimal places).
4. Find the minimum weight for a quarter to be accepted.
5. Find the maximum weight for a quarter to be accepted.