Need assistance in finding the df within for ANOVA testing.

For the df within I subtracted 8 from 8, but that gives me 0 which cannot be right because I would end up getting a Divided by 0 error for the MS within and the F. Can someone please explain how I may solve this? All I need is assistance with that part and I can solve the rest. I appreciate anyone that helps.

1. Test the claim that the exam scores on the eight College Algebra exams are equal. Use alpha error .05. Conduct follow up tests if necessary. Interpret all results.
Exam: 1 2 3 4 5 6 7 8
n: 24 24 24 24 24 24 24 24
mean: 62.21 68.17 70.59 63.84 74.35 66.44 65.00 62.37

Source SS df MS F
Between 2417.52 7 345.36 Error
Within 38147.32 (0)? Error
Total 40564.84 (7) ?

5.5

step-by-step explanation:

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.

a.for lorena 14 hours makes $126   for 16 hours she makes 144

for julie 6 hours makes $72 for 21 hours its $252

b. julie makes more money than lorena julie makes $12 an hour and lorena makes $9  

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