. The null hypothesis is i. The low-humidity group has unequal mean with the high-humidity group. ii. The low-humidity group has greater mean with the high-humidity group. iii. The low-humidity group has equal mean with the high-humidity group. iv. The low-humidity group has less mean with the high-humidity group. B. The computed t-test statistic is i. 0.763 ii. 0.597 iii. 0.452 iv. 0.681 C. The critical/tabular t-test statistic is i. 1.678 ii. 2.013 iii. 2.014 iv. 1.679 D. Decision rule: i. Reject the null hypothesis. ii. Do not reject the null hypothesis. E. The final conclusion is i. The low-humidity group has less mean to high-humidity group. ii. The low-humidity group has greater mean to high-humidity group. iii. The low-humidity group has equal mean to high-humidity group. iv. The low-humidity group has unequal mean to high-humidity group.
In a randomized controlled trial conducted with children suffering from viral croup, 46 children were treated with low humidity while 46 other children were treated with high humidity. The low-humidity group had a
A. The null hypothesis is
i. The low-humidity group has unequal mean with the high-humidity group.
ii. The low-humidity group has greater mean with the high-humidity group.
iii. The low-humidity group has equal mean with the high-humidity group.
iv. The low-humidity group has less mean with the high-humidity group.
B. The computed t-test statistic is
i. 0.763
ii. 0.597
iii. 0.452
iv. 0.681
C. The critical/tabular t-test statistic is
i. 1.678
ii. 2.013
iii. 2.014
iv. 1.679
D. Decision rule:
i. Reject the null hypothesis.
ii. Do not reject the null hypothesis.
E. The final conclusion is
i. The low-humidity group has less mean to high-humidity group.
ii. The low-humidity group has greater mean to high-humidity group.
iii. The low-humidity group has equal mean to high-humidity group.
iv. The low-humidity group has unequal mean to high-humidity group.
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