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Sagot :
Answer:
0.44
Step-by-step explanation:
Given the data:
Control: 23, 27, 30, 26, 31
Treatment: 21, 22, 18, 24, 30
The mean and variance using calculator :
Control :
Mean, x1 = 27.4
Variance, s1 = 10.3
n1 = 5
Treatment :
x2 = 23
s² = 20
H0 : μ1 = μ2
H0 : μ1 > μ2
The test statistic :
(x1 - x2) / √(s1²/n1) + (s2²/n2)
(27.4 - 23) / √(10.3²/5) + (20²/5)
4.4 / 10.060715
Test statistic = 0.437
Test statistic = 0.44
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