Question

Assume that the differences are normally distributed. Complete parts (a) through (d) below. Observation 1 2 3 4 5 6 7 8 Xi 51.4 56.0 48.2 46.3 50.2 49.0 43.3 55.4 Yi 53.6 54.1 51.8 51.2 49.3 48.4 45.7 54.5 (a) Determine di = Xi - Yi for each pair of data. Observation 1 2 3 4 5 6 7 8 di (Type integers or decimals.) (b) Compute d and sd. d = (Round to three decimal places as needed.) sd = (Round to three decimal places as needed.) (c) Test if ?d < 0 at the ? = 0.05 level of significance. What are the correct null and alternative hypotheses? A. H0: ?d = 0 H1: ?d < 0 B. H0: ?d > 0 H1: ?d < 0 C. H0: ?d < 0 H1: ?d > 0 D. H0: ?d < 0 H1: ?d = 0 P-value = (Round to three decimal places as needed.) Choose the correct conclusion below. A. Reject the null hypothesis. There is sufficient evidence that ?d < 0 at the ? = 0.05 level of significance. B. Reject the null hypothesis. There is insufficient evidence that ?d < 0 at the ? = 0.05 level of significance. C. Do not reject the null hypothesis. There is sufficient evidence that ?d < 0 at the ? = 0.05 level of significance. D. Do not reject the null hypothesis. There is insufficient evidence that ?d < 0 at the ? = 0.05 level of significance.

          Assume that the differences are normally distributed. Complete parts (a) through (d) below.
Observation 1 2 3 4 5 6 7 8
Xi 51.4 56.0 48.2 46.3 50.2 49.0 43.3 55.4
Yi 53.6 54.1 51.8 51.2 49.3 48.4 45.7 54.5
(a) Determine di = Xi - Yi for each pair of data.
Observation 1 2 3 4 5 6 7 8
di
(Type integers or decimals.)
(b) Compute d and sd.
d = (Round to three decimal places as needed.)
sd = (Round to three decimal places as needed.)
(c) Test if ?d < 0 at the ? = 0.05 level of significance.
What are the correct null and alternative hypotheses?
A. H0: ?d = 0
H1: ?d < 0
B. H0: ?d > 0
H1: ?d < 0
C. H0: ?d < 0
H1: ?d > 0
D. H0: ?d < 0
H1: ?d = 0
P-value = (Round to three decimal places as needed.)
Choose the correct conclusion below.
A. Reject the null hypothesis. There is sufficient evidence that ?d < 0 at the ? = 0.05 level of significance.
B. Reject the null hypothesis. There is insufficient evidence that ?d < 0 at the ? = 0.05 level of significance.
C. Do not reject the null hypothesis. There is sufficient evidence that ?d < 0 at the ? = 0.05 level of significance.
D. Do not reject the null hypothesis. There is insufficient evidence that ?d < 0 at the ? = 0.05 level of significance.

Assume that the differences are normally distributed. Complete parts (a) through (d) below.
Observation 1 2 3 4 5 6 7 8
Xi 51.4 56.0 48.2 46.3 50.2 49.0 43.3 55.4
Yi 53.6 54.1 51.8 51.2 49.3 48.4 45.7 54.5
(a) Determine di = Xi - Yi for each pair of data.
Observation 1 2 3 4 5 6 7 8
di
(Type integers or decimals.)
(b) Compute d and sd.
d = (Round to three decimal places as needed.)
sd = (Round to three decimal places as needed.)
(c) Test if ?d < 0 at the ? = 0.05 level of significance.
What are the correct null and alternative hypotheses?
A. H0: ?d = 0
H1: ?d < 0
B. H0: ?d > 0
H1: ?d < 0
C. H0: ?d < 0
H1: ?d > 0
D. H0: ?d < 0
H1: ?d = 0
P-value = (Round to three decimal places as needed.)
Choose the correct conclusion below.
A. Reject the null hypothesis. There is sufficient evidence that ?d < 0 at the ? = 0.05 level of significance.
B. Reject the null hypothesis. There is insufficient evidence that ?d < 0 at the ? = 0.05 level of significance.
C. Do not reject the null hypothesis. There is sufficient evidence that ?d < 0 at the ? = 0.05 level of significance.
D. Do not reject the null hypothesis. There is insufficient evidence that ?d < 0 at the ? = 0.05 level of significance.

Added by Anthony J.

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