Answer:
Z-test is a statistical test used to check weather two means are significant or not for unknown variance and large sample size.
Z = (M - μ) ÷ √(σ² / n)
where, M = Sample Mean = 66.075
μ = Population Mean = 90
σ² = Population Variance = 15
Now, Calculating the value of Z-test:
Z = (66.075 - 90) ÷ √(225 ÷ 40)
Z = -23.925 ÷ 2.37171
Z = -39.06936
The value of Z is -39.06936.
The value of p is < .00001 at 90% confidence level.
If the p-value is less than value of α, We accept the null- hypothesis otherwise reject.
The result is significant at p < .10.
Thus, we accept the null hypothesis.
Answer:
52 pages i think
Step-by-step explanation:
13×4= 52
Answer:
360
Step-by-step explanation:
a triangle has an interior sum of 180
quads have 360
Answer:
y = -4x -14
Step-by-step explanation:
The point-slope form of the equation of a line with slope m through point (h, k) is ...
y -k = m(x -h)
For the given point and slope, this is ...
y +2 = -4(x +3)
Solving for y, we get ...
y = -4x -12 -2
y = -4x -14
Is this what you're looking for?
<span>=<span><span>(9)</span><span>(<span>x+<span>−5</span></span>)</span></span></span><span>=
<span><span><span>(9)</span><span>(x)</span></span>+<span><span>(9)</span><span>(<span>−5</span>)</span></span></span></span><span>=
<span><span>9x</span>−<span>45</span></span></span>