help please

A dairy company performs a survey to evaluate the effect of 4 types of sweetener, on the taste of their product. The response variable is the score that a tester assigned 'om l-100.Because there might be variability from one tester to another, the company decides to use a randomized block design, with the testers considered as blocks. Analyze the data and draw conclusions. (o.=0.05) Sweetener 1 l 74 2 75 3 78 4 75 2 67 70 68 69 Tester 3 7 1 72 73 75 4 73 73 75 73 68 67 68 71