Carry out the hypothesis test of H0 u1 u2 H1 u1 does not eq

Carry out the hypothesis test of H0: u1 = u2 H1: u1 does not equal u2 by using R. State your conclusion at significance level alpha = 0.05. Re state your conclusion at significance level alpha = 0.005.

b) Prior to the study, a researcher claims that the mean pH level in lot 1 is less than the mean pH level in lot 2. Do we have significant evidence in support of this claim? Justify your answer using R and state your conclusion at significance level alpha= 0.005. (please attach R output)

Datas:

pH (lot 1): 5.66, 5.73, 5.68, 5.77, 5.73, 5.71, 5.68, 5.58, 6.11, 5.37, 5.67, 5.53, 5.59, 5.94, 5.84, 5.53, 5.64, 5.73, 5.30, 5.65

pH (lot2) : 5.52, 6.73, 6.25, 5.21, 5.63, 6.41, 5.89, 6.76, 5.13, 5.64, 5.94, 6.16, 5.64, 6.54, 5.79, 5.91, 6.17, 6.90, 5.76, 6.07

Solution