<PRE><B>Question 266354</B>
As part of an advertising campaign, the Dairy Council is interested in determining the daily intake of milk among adults. A random sample of 10 adults gave the following results. (Values are given in ounces.) 
23.0 30.6 20.3 10.1 11.5
21.8 22.2 26.9 21.0 30.1 
a. Find x-bar and s for this data set.
xbar = 21.75 ; s = 6.8295
E = invT(0.995,9)*6.8295/sqrt(10) = 7.0186
----------------------------------------------------
b. Construct a 99 percent confidence interval for the mean daily intake of milk. You may assume the daily intake amounts are normally distributed.
----
99% CI: 21.75-7.0186 &lt; u &lt; 21.75+7.0186
=========================================
Cheers,
Stan H.
========================================= </PRE>