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3 years ago

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Mathematics

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garik1379 [7]3 years ago

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A nationwide poll asked a random sample of US adults the question, “Are you in favor of making Election Day a federal holiday?”

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Answer: point estimate = 0.67 and Margin of error = 0.03 .

Step-by-step explanation:

For confidence interval,

Lower limit = point estimate - margin of error

Upper limit = point estimate + margin of error

Given confidence interval: (0.64, 0.70)

i.e. Lower limit = 0.64

Upper limit = 0.70

i.e. point estimate - margin of error= 0.64 (i)

point estimate + margin of error= 0.70 (ii)

Adding (i) and (ii) , we get

2( point estimate) = 1.34

⇒ point estimate = 0.67

Eliminate (i) from (ii) , we get

2( Margin of error ) = 0.06

⇒ Margin of error = 0.03

Hence, point estimate = 0.67 and Margin of error = 0.03 .

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The answer is A and F

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mae ling earns a weekly salary of $325 plus a 6.5% commission on sales at a gift shop. how much would she make in a week if she

uranmaximum [27]

The weekly earning is an illustration of a linear function.

Her total earning when she sells a good worth $4800 is $637

The given parameters are:

$\mathbf{Base = 325}$

$\mathbf{Commission = 6.5\%}$

Let the total sales be x and the total earnings be y.

So, we have:

$\mathbf{y = Base + Commission \times x}$

Substitute known values

$\mathbf{y = 325 + 6.5\% \times x}$

When she sold merchandise worth $4800, it means that <em>x = 4800</em>

So, we have:

$\mathbf{y = 325 + 6.5\% \times 4800}$

$\mathbf{y = 325 + 312}$

$\mathbf{y = 637}$

Hence, her total earning is $637

Read more about linear functions at:

brainly.com/question/20286983

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If she cuts it then the angle would become a right angle so it sould be 90º

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Consider the following scenario describing the Cambridge Mall parking lot: The number of wheels in the parking lot is based on t

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Yes it does, the number of wheels is dependent on the number cars, and each number of wheels will only correspond to one number of cars.

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