The body emits an electrical field, which is known to aid the healing process. T
ID: 3171548 • Letter: T
Question
The body emits an electrical field, which is known to aid the healing process. To determine whether weakening the electric field affects its ability to aid healing, researchers randomly selected 14 newts and subjected one forelimb to an electric current which cut the strength of the body's electric field in half. They then anesthetized the newts, gave both forelimbs of each newt a small cut, and measured the rate at which the cuts healed.
Their data are in the file Newts-Electric-Field-Healing.sav. Please use them to calculate the value of the test statistic and P-value if the null and alternative hypotheses are H0:d=0.
What is the correct hypothesis test for this situation?
A)One Sample t-test, the standard deviation is not known.
B)One Sample z-test, we always use this test if we can.
C) ANOVA
D)Independent Samples t-test
E) Paired-Sample t-test
Explanation / Answer
E) Paired-Sample t-test
It is a statistical procedure used to determine whether the mean difference between two sets of observations is zero.
Data is not provided to test hypothesis.
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