Answer:
(C) There is insufficient evidence that the vitamin improves the health of adults because at the 0.05 significance level, one could easily get statistically significant results in 2 out of 85 tests just due to chance variability.
Explanation:
T- tests is statistical tool that is used to determine if between the mean values of two groups there is a significant difference present.
It is used to test the hypothesis of an assumption that can be applied to a particular set or group of people.
In the question above, Option C is the valid conclusion because from the t-test carried out a significant level of 0.05 occured in two variables out of 85. Therefore there is insufficient evidence to prove that vitamin C improves the health of Adults.
The answer is A hydrochloride acid
