Researchers hypothesize that a new oral contraceptive will produce weight gain. In a study, healthy females were weighed (lb) at the beginning of a course of the new oral contraceptive. They were reweighed at 3 months. What can the researchers conclude with an α of 0.01? The data are below.
initial weight | 3-month weight |
---|---|
140 117 137 130 140 158 147 145 141 140 |
150 119 144 141 144 163 146 145 151 144 |
a) What is the appropriate test statistic?
---Select--- na z-test ,One-Sample t-test, Independent-Samples
t-test ,Related-Samples t-test
b)
Condition 1:
---Select--- beginning new oral contraceptive weight 3 months
healthy females
Condition 2:
---Select--- beginning new oral contraceptive weight 3 months
healthy females
c) Compute the appropriate test statistic(s) to
make a decision about H0.
(Hint: Make sure to write down the null and alternative hypotheses
to help solve the problem.)
critical value = ; test statistic =
Decision: ---Select--- Reject H0 Fail to reject H0
d) If appropriate, compute the CI. If not
appropriate, input "na" for both spaces below.
[ , ]
e) Compute the corresponding effect size(s) and
indicate magnitude(s).
If not appropriate, input and/or select "na" below.
d = ; ---Select--- na trivial
effect small effect medium effect large effect
r2 = ; ---Select--- na
trivial effect small effect medium effect large effect
f) Make an interpretation based on the
results.
A. There was a significant weight decreases in women using the new oral contraceptive.B. There was a significant weight increase in women using the new oral contraceptive. C.There was no significant weight change in women using the new oral contraceptive.
please use 4 numbers after the decimal and please use answer choices provided.
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