The following are the cholesterol contents in milligrams per package that four laboratories obtained for 6- ounce packages of three very similar diet foods:

Perform a two- way analysis of variance and test the null hypotheses concerning the diet foods and the laboratories at the 0.05 level of significance.

Transcribed Image Text:

Dietfood Diet food Diet food Laboratory1 34 Laboratory 2 3.0 Laboratory 3 3.3 Laboratory4 2.6 2.7 3.0 3.1 2.8 3.1 3.4 3.7