For the next two questions: It is known that for right-handed people, the dominant (right) hand tends to be stronger.

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For the next two questions: It is known that for right-handed people, the dominant (right) hand tends to be stronger. For left-handed people who live in a world designed for right-handed people, the same may not be true. To test this, muscle strength was measured on the right and left hands of a random sample of 15 left-handed men and the difference (left - right) was found. The alternative hypothesis is one-sided (left hand stronger). The resulting t-statistic was 1.80.

This is an example of:
A. A two-sample t-test.
B. A paired t-test.
C. A pooled t-test.
D. An unpooled t-test.

Assuming the conditions are met, based on the t-statistic of 1.80 the appropriate conclusion for this test using α = .05 is: (Table would be provided with exam.)
A. Df = 14, so p-value < .05 and the null hypothesis can be rejected.
B. Df = 14, so p-value > .05 and the null hypothesis cannot be rejected.
C. Df = 28, so p-value < .05 and the null hypothesis can be rejected.
D. Df = 28, so p-value > .05 and the null hypothesis cannot be rejected.