a. A hypothesis of ongoing clinical interest is that vitamin C prevents the comm

Q: a. A hypothesis of ongoing clinical interest is that vitamin C prevents the comm

This is a parametric test. A parametric statistical test is makes assumptions about the parameters (defining properties) of the population distribution(s) from which one's data are drawn. The given example is a paired parametric t test which assumes that underlying source population(s) are normally distributed and they the measures derive from an equal-interval scale.

ID: 3126046 • Letter: A

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a. A hypothesis of ongoing clinical interest is that vitamin C prevents the common cold. A study is organized to test this hypothesis using 20 prisoners as participants. In the study, 10 subjects are randomly allocated to receive vitamin C capsules and 10 are randomly allocated to receive placebo capsules. The number of colds over a 12-month period for each participant is noted. The researchers wish to test the hypothesis that vitamin C prevents the common cold. Is this parametric or nonparametric?

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This is a parametric test. A parametric statistical test is makes assumptions about the parameters (defining properties) of the population distribution(s) from which one's data are drawn.

The given example is a paired parametric t test which assumes that underlying source population(s) are normally distributed and they the measures derive from an equal-interval scale.

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a. A hypothesis of ongoing clinical interest is that vitamin C prevents the comm

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