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mathematical statistics question help?
1 Answer
- cidyahLv 77 years agoFavorite Answer
PBS
Mean :459.375
Standard deviation = 58.3681
n1=8
Toxin A
Mean : 425.75
n2=8
Standard deviation = 59.049
Toxin B
Mean : 343
Standard deviation = 58.8946
n3=8
Grand mean : ( (8)(459.375)+(8)(425.75)+(8)(343) )/24 =409.375
Within group SS = (8-1)(58.3681)^2 +(8-1)(59.049)^2+(8-1)(58.8946)^2 = 72538.35
Between groups SS = 8(459.375-409.375)^2 +8(425.75-409.375)^2+8(343-409.375)^2 = 57390.25
ANOVA Table
SOURCE----SS---------df ---- --MS-------- ---- F
Between--- 57390.25--- 2 ... ..28695.13... . 8.3076
Within ----- 72538.35 - 21.... ..3454.065
Total ------ 129925.60 - 23
a) 3454.065
b) 28,695.13
c) 2
d) 21
e) 8.3076 (F test value) ------ -- 0.0022 (significance)
f) you'll have to do the bar graph
