Step-by-step explanation:
(25)^(-0.25) / (25)^(0.25)
= (25)^(-0.5)
= (5)^(-1)
= 1/5 = 0.2.
The better deal is determined by how far she wants to go
2.25 + .5y
1.25 + .75y
Hey there :)
Slope is the coefficient of x ⇒
If the second line is perpendicular to the given line, then the slope of the 2nd line is the reverse/reciprocal of the 1st line ⇒
(10, 5)
↑ ↑
x₁ y₁
Point-slope form is ( y - y₁ ) = m ( x - x₁ )
y - 4 =
( x - 10 )
y - 4 =
- 8
y = ⇔ The equation of the line that passes through the point (10,5) ans perpendicular to the given line
There is not enough evidence to support the administrator’s claim and the true mean is not significantly greater than 280.
<h3>What is a statistical hypothesis?</h3>
A hypothesis to test the given parameters requires that we determine if the mean score of the eighth graders is more than 283, thus:
The null hypothesis:
The alternative hypothesis:
From the population deviation, the Z test for the true mean can be computed as:
Z = 0.756
Note that, since we are carrying out a right-tailed test, the p-value for the test statistics is expressed as follows:
P(z > 0.756)
P = 0.225
Since the P-value is greater than the significance level at α = 0.14, we can conclude that there is not enough evidence to support the administrator’s claim and the true mean is not significantly greater than 280.
Learn more about hypothesis testing here:
brainly.com/question/16251072
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