Question 10 of 13 wanted to compare the pulse rates ofidentical twins to see whe

Question

Question 10 of 13 wanted to compare the pulse rates ofidentical twins to see whether there was any difference Eight sets of twins were randomly selected. The rates are given in the table as number of beats per minute. Ata -0.10, is there a significant diffe in the average pulse rates of twins? Use the P-value method. Assume the variables are normally distributed. Let be the average of twin A, and HD-HA HB. Twin A 93 92 91 93 88 78 84 90 Twin B 84 89 83 86 80 83 79 78 Download data Part 1 State the hypotheses and identify the claim with the correct hypothesis. HD (select) (select) 1 HD (select) 0 select Claim This hypothesis test is a (select) test. 2-taited Part 2 Find the P-value. Round the answer tofour decimal places.

Explanation / Answer

The statistical software output for this problem is:

Paired T hypothesis test:
D = 1 - 2 : Mean of the difference between Twin A and Twin B
H0 : D = 0
HA : D 0
Hypothesis test results:

Part - 1

H0 : D = 0
H1 : D 0 [Claim]

This hypothesis test is a two tailed test.

Part - 2

P - value = 0.0144

Part - 3

Reject the null hypothesis.

Part - 4

There is enough evidence to support the claim that there is a significant difference in the average pulse rates of identical twins.

Difference Mean Std. Err. DF T-Stat P-value Twin A - Twin B 5.875 1.8169588 7 3.233425 0.0144

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