Solve the equation. y + 3 = –y + 9 A.) y=1 B.)y=3 C.)y=6 D.)y=9
1 answer:
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Answer:
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Step-by-step explanation:
By pythagorean theorum we calculate the height:
= = height of triangle
area of triangle = base * height
area =
There are two triangles so:
Multiply this by 13.25 to get total cost:
=$259.65
Answer:
The test statistic is t = 3.36.
Step-by-step explanation:
You're testing the claim that the mean difference is greater than 0.7.
At the null hypothesis, we test if the mean difference is of 0.7 or less, that is:
At the alternate hypothesis, we test if the mean difference is greater than 0.7, that is:
The test statistic is:
In which X is the sample mean, is the value tested at the null hypothesis, s is the standard deviation of the sample and n is the size of the sample.
0.7 is tested at the null hypothesis:
This means that
A survey of 35 people was conducted to compare their self-reported height to their actual height.
This means that
From the sample, the mean difference was 0.95, with a standard deviation of 0.44.
This means that
Calculate the test statistic
The test statistic is t = 3.36.