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Problem 1. A large Norma] sample was used to construct two-sided (symmetric) 97%
and 95% 013 for the population mean. The resulting intervals are I; = (4
Math/Stat 352 Homework 8 Solutions
Since the alternate hypothesis is of the form p > p 0, the P-value is the area to the right of z = 1.13, so P =
0.1292. We cannot conclude that more than half of bathroom scales undere
MATH/STAT 352, FALL 2013, PRACTICE EXERCISES FOR TEST 1
INSTRUCTIONS: Please try and do these problems without looking at the book. If you need help, solutions
are provided at the end of this document. Your test questions will differ from this practice qu
MATH/STAT 352 Homework 1 Solutions
4. (a) False
5. (a) No.
What is important is the population proportion of defectives; the sample proportion is only an approximation.
The population proportion for the new process may in fact be grea