Students in a business statistics course performed a complet

Students in a business statistics course performed a completely randomized design to test the strength of four brands of trash bags. One-pound weights were placed into a bags. one at a time, until the bag broke. A total of 24 bags. 6 for each band, were used. The data in the accompanying table give the weight (in pounds) required to break the trash bags, Complete (a) through (d) below. A. At the 0.05 level of significance, is there evidence of a difference in the mean strength of the four brands of trash begs? Determine the hypotheses. Choose the correct answer below.

Solution

a)

the answer for your question is letter B

because we only have 4 subgroups

and the null hypothesis is always with equals sign

the alternative hipothesis say that not all, that means that they are different

so that will be your answer B