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To study the effect of temperature on yield in a chemical process, five batches

ID: 3322774 • Letter: T

Question

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

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

*Fill in blanks

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

The p-value is (pick one): less than .01, between .01 and .025, between .025 and .05, between .05 and .10, greater than .10

What is your conclusion? -> mean yields are all equal/notequal?

Temperature

50°C 60°C 70°C 36 35 25 26 36 30 38 39 30 41 28 32 34 32 33

Explanation / Answer

From statistical software output, the ANOVA table will be:

ANOVA table

The p - value is greater than .10.

All means are not equal.

Source of Variaiton Sum of Squares Degrees of Freedom Mean Square F P-value Treatments 70 2 35 1.78 0.2104 Error 236 12 19.67 Total 306 14
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