Question

Outcome Observed Expected404040 40 Determine test statistic, b) the degrees of freedom c) the critical value using α-0.05, and d) test the hypothesis at the α-0 05 level of significance. a) the χ 42 39 38 41 H,: At least one of the proportions is different from the others. (a) The test statistic is Type an exact answer.) (b) There aredegrees of freedom (c) The critical value is Round to three decimal places as needed.)

Answer 1

observed	expected	(Oi - Ei)^2/Ei
42	40	0.1
39	40	0.025
38	40	0.1
41	40	0.025
		0.25

a)
Test statistic,
chi-square = sum((Oi - Ei)^2/Ei)
= 0.25

b)
degrees of freedom = 3

c)
critical value is 7.815

d)
Option A