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May 22, 2015

Homework Help: Statistics

Posted by Beverley on Wednesday, October 6, 2010 at 5:09pm.

Hi Bob,
Thanks for the direction. I got so far with it on my own and became stuck. I did as you said but still have one question. Would the answer to the question be 1.31 ounces or 6.61 ounces? I feel the answer is 1.31. Thanks

* Statistics - bobpursley, Wednesday, October 6, 2010 at 4:56pm

No. When the mean is zero, the point comes out to be -1.31 ounces. But you want that -1.31 to be 5.3, so you add 5.3 to 1.31, mean 6.61. That way, you at 5 percent is still -1.31 ounces below the mean.
Remember here, you std deviation is .8 ounces, so three standard deviatons is only about 2.4


Ok so the average weight of the product should be around 2.4? Sorry I am just hitting a wall here. I see everything above and it makes sense but I just am struggling to know what the final answer is

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