Scenario 3: To determine the effectiveness of a new diuretic drug, urine output was measured in 20...

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Statistics

Scenario 3:
To determine the effectiveness of a new diuretic drug, urineoutput was measured in 20 men and compared to 20 men that receivedplacebo control. The data are summarized in Table 2 below. The nullhypothesis is: H₀: Î¼ _Placebo=Î¼_{Â Â drug.}
Table2.Â Â Effectiveness of New DiureticDrug
Mean Urine Output
(mg/kg/hr)
SD
Placebo
1.58
0.66
Drug
2.78
0.77
What is the null hypothesis equation for this experiment?

What statistical test would you use?
t-test
ANOVA
Relative Risk
POWER

What is the 95% confidence intervals for this 2 samplet-test?

4.Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Basedon the statistical test that you chose, do you accept or reject thenull hypothesis at P=0.05? Please paste your data outputfile in the area below.
5.Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Whatis the Power of this test?Please paste your data output file in thearea below.
How many samples are needed to achieve a power of0.80?Â Â Please paste your data output file in the areabelow. Â Â

Answer & Explanation Solved by verified expert

4.0 Ratings (426 Votes)

3 TRADITIONAL METHOD given that meanx158 standard deviation sd1066 numbern120 ymean278 standard deviation sd2 077 numbern220 I stanadard error sqrtsd12n1sd22n2 where sd1 sd2 standard deviation of both n1 n2 sample size stanadard error sqrt0442005920 023 II margin of error t a2 stanadard error where t a2 t table value level of significance 005 from standard normal table two tailed and value of t with min n11 n21 ie 19 See Answer

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	Mean Urine Output (mg/kg/hr)	SD
Placebo	1.58	0.66
Drug	2.78	0.77