DO YOU AGREE WITH THIS WHY OR WHY NOT?

1) The standard deviation isknown.= 3daysN= 50

2)Homean7daysWeassume this is correct until proven otherwise.

Hamean<7days(claim)Thisis a left-tailed test.

3) Alpha = 0.05

4) z= (8-7)/(3/sqrt(50)) =2.36 teststatistic

5) The critical value for this left-tailed test is -1.645.

6)Our test statistic of 2.36 is greater than our critical value of -1.645, so we must fail to reject the null hypothesis.We do not agree with the Company's claim.We should not use their skin glue-based upon inaccurate claims.