The amount of fill (weight of contents) put into a glass jar of spaghetti suace is normally distributed with a mean μ= 850 grams (g) and standard deviation σ= 8g.
a) Describe the distribution of x, the amount of fill per jar.
b) find the probabilty that 1 jar selected at random contains between 848 and 855g.
c) Describe the disribution of x-bar, the mean weight for a sample of 24 such jars of sauce.
d) Find the probability that a random sample of 24 jars has a mean between 848 and 855g.
2007-12-14 10:02:03 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Nice problem.
If you are up to looking at the distribution of x-bar, then you can probably handle parts a and b without help.
As for c and d, check out:
http://en.wikipedia.org/wiki/Standard_error_(statistics)
2007-12-17 18:08:32 · answer #1 · answered by simplicitus 7 · 0⤊ 0⤋