Class Parameters vs. Personal Sample Data The results from the data collection from all last year's stat classes from Part 1 of the Project is below. Your statistics from Part 1 needs to be used as sample data for all the Steps of Part 2. The parameters below will be used in Step 2,3 & 4 along with yours. Population Mean
\mu =19.6
(minutes) Pop. Standard Deviation
\sigma =10.5
(minutes) (Assume
n>30
.) Your Sample Mean
\bar{x} =
20.3 Your Sample Standard Deviation
s=
q,
98.32 List 30 Data Values from Part 1 of the project.
8,10,11,13,13,14,15,15,16,17,18,19,20,20,21,21
22,23,23,25,26,27,29,31,32,33,34
STEP 3: Confidence Interval A. Construct a
95%
confidence interval for the population's mean study time.
q,
<\mu <
q,
or (
q,
, _) B. If someone were to ask you what this particular confidence interval means, what would you say? STEP 4: Hypothesis Test Test the hypothesis that the population's mean is different from the sample's mean value. Use
\alpha =0.05
. Alternative hypothesis
(H_(1))
:
q,
Null hypothesis
(H_(0))
P-value
◻
Test statistic:
◻
Conclusion: Do you reject the null hypothesis (yes or no)?
◻
If someone were to ask what the conclusion means in this particular study, what would you say?