Shirley is curious as to whether Australia has the same average petrol prices to New Zealand and Indonesia. Test this at the 1% level of significance. Useworksheet Lof the Excel Exam data file to answer this question.

The null hypothesis to be tested is

H0: at least one is different

H0: 1 ? 2 ? 3H0: 2 = 3

H0: 1 = 2 = 3T

he degrees of freedom for between groups is2431

The sample mean value for Australia is

A) 143.64

B) 0.55

C) 141.64

D) 131.09

The decision rule for a 1% test is

A)Reject H0 if Z > 1.65

B) Reject H0 if F > 1.69

C) Reject H0 if F > 5.14

D)Reject H0 if F > 5.39

Thep-value for this test is

A)13.99

B) 0.01

C) 3.11

D) virtually zero

The calculated test statistic is

A) 11.23

B) 5.14

C) 5.11

D) 3.32

The conclusion for this hypothesis test is

A) Do not reject H0 and hence conclude that at least one mean differs.

B) Do not reject H0 and hence conclude that means are equal.

C) Reject H0 and hence conclude that at least one mean differs.

D) Reject H0 and hence conclude that means are equal.

Aust NZ Ind 150 149 140 142 148 127 141 142 127 133 130 128 148 141 138 141 138 135 147 136 135 142 142 130 134 147 131 147 138 135 155 151 133