STAT 269 - Introductory Statistics
Practice Quiz 7 { Chapter 7 Part B
1. Suppose a study is commissioned to answer the following question: Does a rose bush treated with
Miracle Grow plant food have more than 20 blooms, on average? Construct the appropriate hypotheses
for this question.
2. Suppose in the setting in question 1., 15 bushes are used. What assumptions would we need to make
to conduct the appropriate test?
3. If after the study in questions 1. and 2., it is concluded that the null hypothesis cannot be rejected,
what would the conclusion be, in English?
4. In a separate example, a high school statistics student has obtained a TS of 1.63 using his 50 obser-
vations in a right tailed Case 1 setting. What would his
P
-value be?
5. If you were doing a 0.05 level left-tailed test for
, with 10 observations, what would the rejection
region be?
6. Suppose that in a Case 3 setting, we have found ^
p
=
:
34,
n
= 1000, and
p
0
=
:
3. Calculate the test
statistic.