5-year Survival Treatment No Yes Total Yes 4300 750 5050 No 7200 650 7850 Total 11500...

	5-year Survival
Treatment	No	Yes	Total
Yes	4300	750	5050
No	7200	650	7850
Total	11500	1400	12900

Q: is the treatment effective? (Calculate and show the chi-squared test p value in your answer.)

Solutions

Expert Solution

using excel>addin>phstat>nultiple sample test

we have

Chi-Square Test

Observed Frequencies
	5 year survival			Calculations
treatment	no	yes	Total	fo-fe
yes	4300	750	5050	-201.938	201.938
no	7200	650	7850	201.938	-201.938
Total	11500	1400	12900

Expected Frequencies
	5 year survival
treatment	no	yes	Total	(fo-fe)^2/fe
yes	4501.938	548.062	5050	9.058088	74.40572
no	6998.062	851.938	7850	5.827178	47.8661
Total	11500	1400	12900

Data
Level of Significance	0.05
Number of Rows	2
Number of Columns	2
Degrees of Freedom	1

Results
Critical Value	3.841459
Chi-Square Test Statistic	137.1571
*p-Value*	1.11E-31
Reject the null hypothesis

H0:the treatment is not effecticve

Ha:the treatment is effecticve

the value of chi square is 137.157

p value is 0.000

since p value is less than 0.05 so we reject ho and conclude that the treatment is effecticve

orchestra answered 1 year ago

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