Which type of t inference procedure? (A: one sample, B: matched pairs, C: two samples) 1....

Which type of t inference procedure?

(A: one sample, B: matched pairs, C: two samples)

1. ______Is blood pressure altered by use of an oral contraceptive? Comparing a sample of women not using an OC with a sample of women taking it.

2. ______Average cholesterol level in general adult population is 175 mg/dl. Take a sample of adults with ‘high cholesterol’ parents. Is the mean cholesterol level higher in this population?

3. ______Does bread lose vitamin with storage? Take a sample of bread loaves and compare vitamin content right after baking and again after 3 days later.

4. ______Does bread lose vitamin with storage? Take a sample of bread loaves just baked and a sample of bread loaves stored for 3 days and compare vitamin content.

Expert Solution

One Sample t Test determines whether the sample mean is statistically different from a known or hypothesized population mean

Two-sample t-test is used when the data of two samples are statistically independent

The matched-pair t-test is used when the data from the two groups can be presented in pairs measured in before-and-after comparison or when the group is given two different tests at different times

Using above information, lets classify following

1. ______Is blood pressure altered by use of an oral contraceptive? Comparing a sample of women not using an OC with a sample of women taking it.
- In this two different samples are taken one using OC and one not using OC. Thus, Two-sample t-test is used

2. ______Average cholesterol level in general adult population is 175 mg/dl. Take a sample of adults with ‘high cholesterol’ parents. Is the mean cholesterol level higher in this population?
- In this single sample is used to compare with population. Thus, One Sample t Test is used

3. ______Does bread lose vitamin with storage? Take a sample of bread loaves and compare vitamin content right after baking and again after 3 days later.
- In this same bread loaves are compared before and after. Thus, matched-pair t-test is used

4. ______Does bread lose vitamin with storage? Take a sample of bread loaves just baked and a sample of bread loaves stored for 3 days and compare vitamin content.
- Here we are considering two different samples. Thus, Two-sample t-test is used

milcah answered 2 months ago

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