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gg68814
11.11.2020 •
Mathematics
Graph the equations x = 3 and y=5.
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Ответ:
plot points:
(0, 5)
(3, 5)
(3, 0)
Step-by-step explanation:
Ответ:
A) The null hypothesis is H₀;
= ![\overline x_2](/tpl/images/1206/7041/4c18c.png)
The alternative hypothesis is Hₐ;
≠ ![\overline x_2](/tpl/images/1206/7041/4c18c.png)
B) The critical value is 4.604
C) The pooled variance is 11,870.2777
D) The standard error is-0.2321
E) The obtained is -0.2040
Step-by-step explanation:
The given values are;
s₁ = 123.43, s₂ = 105.65
n₁ = 5, n₂ = 20
A) The null hypothesis, H₀;
= ![\overline x_2](/tpl/images/1206/7041/4c18c.png)
The alternative hypothesis, Hₐ;
≠ ![\overline x_2](/tpl/images/1206/7041/4c18c.png)
B) The degrees of freedom, df = 4 - 1 = 3
The critical t-value is given at α = 0.01 is given on the t-table for two tailed test as t = 4.604
C) The pooled variance is given by the following formula;
Plugging in the values gives;
The pooled variance,
= 11,870.2777
D) The standard error, SE, is given as follows;
Therefore, we get;
The standard error, SE ≈ -0.2321
E) The obtained 't' is given as follows;
Therefore, we have;
The obtained t is given as follows;
Therefore, we get;
The obtained t = -0.2040