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Ber [7]
3 years ago
11

Can someone help please

Mathematics
1 answer:
Karolina [17]3 years ago
3 0
The first grid is right

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SAT scores: The College Board reports that in 2009, the mean score on the math SAT was 582 and the population standard deviation
Andrews [41]

Answer:

we can conclude that there is no significant evidence to conclude that the mean score in 2010 differs from the mean score in 2009.

Step-by-step explanation:

H0 : μ = 582

H1 : μ < 582

Test statistic :

T = (xbar - μ) ÷ σ/√n

Xbar = 515 ; n = 20 ; σ = 120

T = (515 - 582) ÷ 120/√20

T = -67 / 26.832815

T = 2.50

Pvalue at t score = 2.50 ; df = 19 is 0.0187

At α = 0.0187

Pvalue > α ; Hence, we fail to reject the Null

Hence, we can conclude that there is no significant evidence to conclude that the mean score in 2010 differs from the mean score in 2009.

7 0
3 years ago
How do I graph the linear equation of y=x+2
Korolek [52]
Replace ‘x’ with what ever number and then add 2, because if you make x a 1 then you would get a three. the equation goes from (x+2)=y to (1+2)=3 so make x whatever you want and then add 2 and you’ll get your ‘y’
6 0
3 years ago
Question 3 (1 point)
IceJOKER [234]
Answer is b have a good day too enjoy the answe
4 0
3 years ago
What numbers do you need to determine the surface area of a right cone? ANSWERS: The radius of the base, r, and the altitude h.
tiny-mole [99]

Answer:

The Radius of the base, r, and the altitude h

Step-by-step explanation:

Surface area of a right cone

a=\pi r\sqrt{h^{2}+r^{2}  }

R= Radius

H=Radius

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3 years ago
Joshua bought a variety of peppers at the market.
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The answer is 9.92 pounds
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