Question

24.

Several employees have submitted different methods of assembling a subassembly. Sample data for each method are shown below:

Minutes Required for Assembly
Sample Number	Lind's Method	Szabo's Method	Carl's Method	Manley's Method
1	16.6	22.4	31.4	18.4
2	17.0	21.5	33.4	19.6
3	16.9	22.6	30.1	17.6

How many treatments are there?

Multiple Choice

• 3

• 4

• 12

• 0

25.

Given the following ANOVA table for three treatments, each of which having six observations (i.e. there are a total of 18 observations):

Source	Sum of Squares	df	Mean square
Treatment	1116
Error	1068
Total	2184

What is the treatment mean square?

Multiple Choice

• 71.2

• 71.4

• 558

• 534

26.

Two accounting professors decided to compare the variance of their grading procedures. To accomplish this, they each graded the same 10 exams, with the following results:

	Mean Grade	Standard Deviation
Professor 1	79.3	22.4
Professor 2	82.1	12.0

The calculated F ratio is ______.

Multiple Choice

• 3.484

• 1.867

• 3.180

• 5.350

Answer 1

Ans 24)

Number of treatment =Number of sample

Number of sample =3

Number of treatment =3

There are 3 treatment in the given data.

Ans 25)

Sum of square of treatment =1116

Mean square of treatment =(Sum of square of treatment) / (Degrees of freedom assciate with treatment )

=1116/2

=558

The treatment mean square =558

26)

F test statistics:

The calculated F ratio is 3.484