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QUESTION 2
Qualitative
adule
Part H
A common convention in social science is to set the alpha level at .05 and to reject the null hypothesis if the observed significance level is less
than the alpha level, p <.05. Which of the following is correct?
a. Ifp=,041, reject the null hypothesis
ob. if p = .074, reject the null hypothesis
oc. If p-.000, do not reject the null hypothesis
od if p = 952, reject the null hypothesis
NTS
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QUESTION 3
5
LEARNING
5
RNING
S
LEARNING
S
ERS
SCUSSION
Part H
A confidence interval is a range of population values estimated from the results of a sample. From a random sample of 100 graduate students at
Walden, suppose you calculate the average age to be 37 plus or minus 11, which would make the lower limit of the confidence interval 26 lie. 37
- 11 = 26) and the upper limit 48 (i. e., 37 + 11 = 48). If this was a 95% confidence interval, which of the following is correct?
O a. There is a 5% probability that the true average age of Walden graduate students is between 26 and 48
b.95% of all Walden graduate students are between 26 and 48 years of age
OC. The true average age of Walden graduate students could be less than 26 or greater than 48
od. A 99% confidence interval would be narrower, for example between 32 and 42
CATION &
SS
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