Please answer questions [17] and [18]: It is known that for right-handed people,
ID: 2909297 • Letter: P
Question
Please answer questions [17] and [18]: 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 [17] 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 [18] Assuming the conditions are met, based on the t-statistic of 1.80 the appropriate conclusion for this test using ? = 0.05 is: (A) Degrees of freedom = 14, p-value 0.05, fail to reject the null hypothesis (C) Degrees of freedom- 28, p-value0.05, reject the null hypothesis (D) Degrees of freedom- 28, p-value 0.05, fail to reject the null hypothesisExplanation / Answer
Question 17]
n = 15 , df = n - 1 = 14 , alpha = 0.05
Difference = ( left - right )
t statistic = 1.80
Answer :- [ B ] Paired t test
Question 18)
The P-Value is 0.04672.
The result is significant at p < .05.
Answer :- [ A ]
Degrees of freedom = 14 , p = 0.05 , reject the null hypothesis