A herbal extract is claimed to lower the blood glucose level. 20 prediabetic subjects were give capsules containing lactose for 1 month and their mean blood glucose level (BGL) was measured as 127+10 mg/dl. Another sample of 20 subjects were given capsules containing dried herbal extract for one month was and the mean BGL was measured as 121±12. The question of interest was does the herbal extract result in significant BGL reduction compared to placebo. ASsuming the populations have equal standard deviation, test statistic is calculated as

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A herbal extract is claimed to lower the blood glucose level. 20 prediabetic subjects were give
capsules containing lactose for 1 month and their mean blood glucose level (BGL) was
measured as 127±10 mg/dl. Another sample of 20 subjects were given capsules containing
dried herbal extract for one month was and the mean BGL was measured as 121±12. The
question of interest was does the herbal extract result in significant BGL reduction compared
to placebo. ASsuming the populations have equal standard deviation, test statistic is
calculated as
O 4.318
O 5.412
O4.654
O3.123
O 2.745
O 1.718
O 1.34
O 2.214
Transcribed Image Text:A herbal extract is claimed to lower the blood glucose level. 20 prediabetic subjects were give capsules containing lactose for 1 month and their mean blood glucose level (BGL) was measured as 127±10 mg/dl. Another sample of 20 subjects were given capsules containing dried herbal extract for one month was and the mean BGL was measured as 121±12. The question of interest was does the herbal extract result in significant BGL reduction compared to placebo. ASsuming the populations have equal standard deviation, test statistic is calculated as O 4.318 O 5.412 O4.654 O3.123 O 2.745 O 1.718 O 1.34 O 2.214
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