To study the effect of temperature on yield in a chemical process, five batches were produced at each of three temperature levels. The results follow.

Temperature

50C 32 22 34 37 30

60C 31 32 35 24 28

70C 30 35 35 37 38

1. Construct an analysis of variance table (to 2 decimals, if necessary). Roundp-value to four decimal places.

Source of Variation Sum of Squares Degrees of Freedom Mean Square F p-value

Treatments

Error

Total

1. Use a .05 level of significance to test whether the temperature level has an effect on the mean yield of the process.

Thep-value isSelect

less than .01

between .01 and .025

between .025 and .05

between .05 and .10

greater than .10

1. What is your conclusion?

Select

Conclude that the mean yields for the three temperatures are not all equal

Conclude that the mean yields for the three temperatures are all equal