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makkiz [27]
3 years ago
5

Classify the conclusion of the hypothesis test as a Type I error, a Type II error, or a correct decision. In 1991, the average m

ath SAT score for students at one school was 465. Five years later, a teacher wants to perform a hypothesis test to determine whether the average math SAT score of students at the school has changed from the 1991 mean of 465. The hypotheses are: H0: μ-465 H1: μ # 465 Suppose that the results of the sampling lead to rejection of the null hypothesis. Classify that conclusion as a Type I error, a Type II error, or a correct decision, if in fact the average math SAT score of students at the school has changed from the 1991 mean of 465.
A. Type II error
B. Correct decision
C. Type I error
Mathematics
1 answer:
Fofino [41]3 years ago
8 0

Answer:

B. Correct decision

Step-by-step explanation:

We know that the average math SAT score of students at the school has changed from the 1991 mean of 465. That is μ≠465.

This hypothesis was tested and the null hypothesis, that states that the average math SAT score of students at the school has not changed from the 1991 mean, was rejected.

Then, the conclusion of rejecting the null hypothesis is right, as μ=465 is false.

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PLs help
Pavel [41]

A) The hypotenuse is the longest side of the triangle .In the figure EG is the hypotenuse.The given angle is <G=40 degrees.The side adjacent is FG= 10 units.

The question is asking us to find the trigonometry ratio which will  help us find EG.We can use cos  as cos is ratio of adjacent and hypotenuse.

cos 40=\frac{10}{Hypotenuse EG.}

B) Cos  40 =0.766.

Substituting tan40 value we have:

0.766=\frac{10}{EG}

EG=13.05.

C)Sum of angles in  triangle is 180.

<E+<F+<G=180

<E+90+40=180

<E+130=180

<E=50 degrees.

D) Tan  40=\frac{EF}{10}

EF=8.39

E) Area of triangle EFG= \frac{1}{2}x base x height.

A rea of the triangle = \frac{1}{2}x8.39x13.05

Area= 54.75 square units.





5 0
3 years ago
Help me please help me, I need the answer because only have 1 hour for finish and my grades is so bads and these is extra credit
LekaFEV [45]

Answer:wow

Step-by-step explanation:sad

8 0
3 years ago
A serving of chickenpeas contain 1,750 milligrams of potassium. how many grams of potassium is that
Sidana [21]

1.75 Grams is what I got. Every 1 Milligram = 0.001 Gram.

Hope it helps :)


8 0
3 years ago
Is -2(3x-7) equivalent to 19+12x-5-6x? YES or NO???
nadezda [96]

Answer:





6. 6x-21=33+9x 7. -15x=-5(3x+7) 8. 16x-19=113-6x 9. -19x-34=56-x 10. -6(4x+3)=6(4x-3)?

6. 6x-21 = 33 +9x

+21 + 21

6x = 54 + 9x

-9x -9x

-3x = 54

/3 /3

x = -18

7. -15x = -5(3x+7)

First multiply the -5 to the other numbers.

-15x = -15x - 35

0x = -35

7 is impossible I believe.

8. 16x-19 = 113-6x

+6 +6

22x - 19 = 113

+ 19 +19

22x = 132

/22 /22

x = 6

9. -19x - 34 = 56 - x

+19x +19x

-34 = 56 + 18x

-56 -56

-90 = 18x

/18 /18

x = -5

10. -6(4x+3) = 6[4x-3]

-24x - 18 = 24x - 18

+18 +18

-24x= 24x

x = 0, since only zero can make the equation true.

7 0
3 years ago
A typical tip in a restaurant is 18% of the total bill.
Ulleksa [173]

Answer:

$16.20

Step-by-step explanation:

90 x .18 (Turn percent into decimal by moving decimal 2 places left)

$16.20

4 0
2 years ago
Read 2 more answers
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