The diameter of Dillion’s new rug was 6 feet. Which is closest to the area of dillons new rug
1 answer:
The area of the rug is 28.28ft^2
Data given
- diameter = 6ft
- radius = d/2 = 6/2 = 3ft
- π = 3.142
To solve this problem, we have to use the formula of area of a circle which is given as
Substitute the values and solve for the area
The closest area of the rug is 28.28ft^2
learn more on area of a circle here;
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Answer:
We conclude that the Pennsylvania school district have an IQ higher than the average of 101.5
Step-by-step explanation:
We are given the following in the question:
Population mean, μ = 101.5
Sample mean, = 106.4
Sample size, n = 30
Alpha, α = 0.05
Population standard deviation, σ = 15
First, we design the null and the alternate hypothesis
We use one-tailed z test to perform this hypothesis.
Formula:
Putting all the values, we have
Now,
Since,
We reject the null hypothesis and accept the alternate hypothesis.
Thus, we conclude that the Pennsylvania school district have an IQ higher than the average of 101.5
This is what a 45 degree angle looks like.
Good luck!
Good luck!