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16.03.2020 •
Mathematics
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Ответ:
Learning about functions vs. new language
Step-by-step explanation:
They both follow strict laws (typically stricter for functions).Practice makes perfect: both can be learned to points of practical perfection.The brain must first attribute meaning or value to elements of either in order to build a learning pattern.Ответ:
Step-by-step explanation:
From the information given,
The formula for determining the t test statistic is
t = (x1 - x2)/√(s1²/n1 + s2²/n2)
Where
x1 = sample mean of the first population
x2 = sample mean of the second population
s1 = sample standard deviation of the first population
s2 = sample standard deviation of the second population
n1 = number of samples in the first population
n2 = number of samples in the second population
From the information given,
x1 = 350
x2 = 342
s1 = 12
s2 = 15
n1 = 15
n2 = 17
Therefore,
t = (350 - 342)/√(12²/15 + 15²/17)
= 8/√(9.6 + 13.24)
= 1.674
degree of freedom is
n2 + n1 - 2 = 17 + 15 - 2 = 30
The test is 2 tailed. Using the test statistic calculator, the probability value is 0.105
Comparing the probability value with the significance level, there is no significant difference. Therefore, we would fail to reject the null hypothesis