# hi, i need some help(test of means and proportions)

• May 16th 2009, 10:22 PM
rockin95
hi, i need some help(test of means and proportions)
alright here is the question,
Beer shelf live is a problem for brewers and distributors, because when beer is stored at room temperature, its flavor deteriorates. When the average furfuryl ether content reaches 6 ug per liter, a typical consumer begins to taste an unpleasant chemical flavor. At alpha = .05, would the following sample of 12 randomly chosen bottles stored for a month convince you that the mean furfuryl ether content exceeded the taste threshold? What is the p-value?
6.53
5.68
8.1
7.5
6.32
8.75
5.98
7.5
5.01
5.95
6.40
7.02
OK, now when i put this into megastat with the alternative set to (greater then)and a confidence interval of 95% and i get

6.00000 hypothesized value
6.72833 mean mg per liter
1.07771 std. dev.
0.31111 std. error
12 n
11 df
2.34 t
.0195 p-value (one-tailed, upper)

can someone help me to solve the question about the threshold, i am confused about the alpha at .05 part, should i make the confidence interval .05 maybe? i don't know help me out