Question

can dba & standard... tics T test With Data Aation and Linear Reg... 184: Linear Regression ad: In Exercise, use Ta... About the correlatio... al Estate Agency Says.. The table below shows the number of hours per day 11 patients suffered from headaches before and after 7 weeks of soft tissue therapy. At 0.01, is there enough evidence to conclude that soft tissue therapy helps to reduce the length of time patients suffer from headaches? Assume the samples are random and dependent, and the population is normally distributed. Complete parts(a) through (0) Patient 12 3 4 5 6 7 8 9 10 11 Daily headache hours (before) 2.4 1.5 1.8 3.4 2.8 3.6 29 3.5 4.5 3.2 24 Daily headache hours (after) 1.6 23 13 2.5 2.1 2.5 2.6 3.2 3.3 1.8 3.0 (a) Identify the claim and state Ho and H The claim is "The therapy helps to reduce the length of time patients suffer from headaches." Leto be the hypothesized mean of the patients' daily headache hours before therapy minus their daily headache hours after it State Ho and H. Choose the correct answer below. ● A. Ho: Hg 20 OB. Hoid O C. Họ 4 = 0 HO Hoi Hy > 0 Click to select your answer).

Answer 1

(a) helps to reduce

Option C

(b) 2.764

Option C

(c) d = 0.527

sd = 0.702

(d) t = 2.493

(e) Fail to reject the null hypothesis

(f) Option B

2.9091	mean Before
2.3818	mean After
0.5273	mean difference (Before - After)
0.7016	std. dev.
0.2115	std. error
11	n
10	df
2.493	t
.0159	p-value (one-tailed, upper)