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Stella [2.4K]
3 years ago
7

Craig scored 12 points in a game.Marla scored twice as many points as Craig but 5 fewer points than Nelson scored.How many point

s did Nelson score?
A.2 x 12 + 5

B.2 x 12 - 5

C.1/2 x 12 + 5

D.2 x [12 + 5]
Mathematics
2 answers:
Nady [450]3 years ago
7 0
He scored A. Since Marla scored twice as many but fewer than nelson her answer would be B, because it's 5 less but nelson had that 5 so it's plus 5
likoan [24]3 years ago
4 0
I think it might be A.
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the length of a rectangle is 2 inches longer than twice its width. If the area of the rectangle is 24 square inches, what are th
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Answer:

The length is 8 inches and the width is 3 inches

Step-by-step explanation:

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A = lw

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7 0
3 years ago
One of the questions Rasmussen Reports included on a 2018 survey of 2,500 likely voters asked if the country is headed in right
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Answer:

Kindly check explanation

Step-by-step explanation:

Given the data:

553 - No

70 - Not Sure

384 - Yes

Total = (553 + 70 + 384) = 1007

Proportion who do think country is headed in the right direction :

P = yes / total = 384/1007 = 0.381

b.) Error margin at 95%

Margin of Error = Zcritical * √p(1-p)/n

1-p = 1 - 0.381 = 0.619

Zcritical at 95% = 1.96

Margin of error = 1.96 * √0.381(0.619)/1007

Margin of error = 0.030

C.)

95% confidence interval for heading in the right direction:

P ± margin of error

P ± 0.030

Lower boundary = 0.381 - 0.030 = 0.351

Upper boundary = 0.381 + 0.030 = 0.411

(0.351 ; 0.411)

D.)

Confidence interval for people who don't think :

P = 553 / 1007 = 0.549

Confidence interval = P ± margin of error

Error margin at 95%

Margin of Error = Zcritical * √p(1-p)/n

1-p = 1 - 0.549 = 0.451

Zcritical at 95% = 1.96

Margin of error = 1.96 * √0.549(0.451)/1007

Margin of error = 0.031

P ± margin of error

P ± 0.031

Lower boundary = 0.549 - 0.031 = 0.518

Upper boundary = 0.549 + 0.031 = 0.580

(0.518 ; 0.580)

E.)

The interval with smaller error margin is ; 0.030 (those who think country is headed in the right direction because sample proportion is farther from .5 / farther from 1)

6 0
3 years ago
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