Determine I) the alternative hypothesis to be tested II) the sample pooled-variances III) the test statistic III) The conclusion: a) Since t=0.036 is less than t subscript 0.025 comma 12 end subscript equals 2.110, we then fail to reject the null hypothesis at 5% level of significance and conclude that the average percentage of aluminium oxide at the two sites are different. b) Since t=0.036 is greater than t subscript 0.025 comma 12 end subscript equals 2.110 , we then fail to reject the null hypothesis at 5% level of significance and conclude that the average percentage of aluminium oxide at the two sites are not different. c) Since t=0.036 is less than t subscript 0.025 comma 12 end subscript equals 2.110 , we then reject the null hypothesis at 5% level of significance and conclude that the average percentage of aluminium oxide at the two sites are not different. d) Since t=0.036 is less than t subscript 0.025 comma 12 end subscript equals 2.110 , we then fail to reject the null hypothesis at 5% level of significance and conclude that the average percentage of aluminium oxide at the two sites are not different.
Determine
I) the alternative hypothesis to be tested
II) the sample pooled-variances
III) the test statistic
III) The conclusion:
a) Since t=0.036 is less than t subscript 0.025 comma 12 end subscript equals 2.110, we then fail to reject the null hypothesis at 5% level of significance and conclude that the average percentage of aluminium oxide at the two sites are different.
b) Since t=0.036 is greater than t subscript 0.025 comma 12 end subscript equals 2.110 , we then fail to reject the null hypothesis at 5% level of significance and conclude that the average percentage of aluminium oxide at the two sites are not different.
c) Since t=0.036 is less than t subscript 0.025 comma 12 end subscript equals 2.110 , we then reject the null hypothesis at 5% level of significance and conclude that the average percentage of aluminium oxide at the two sites are not different.
d) Since t=0.036 is less than t subscript 0.025 comma 12 end subscript equals 2.110 , we then fail to reject the null hypothesis at 5% level of significance and conclude that the average percentage of aluminium oxide at the two sites are not different.
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