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Marta_Voda [28]
4 years ago
10

I need help with 13 please ASAP

Mathematics
1 answer:
mote1985 [20]4 years ago
7 0

338.50 - 45 = 293.50 was spent on tolls

293.50 / 14 = 20.96

 so 21 tolls

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Juan earns $11 per hour and works at the most 30 hours per week. Identify the independent and dependent quantity in the situatio
yanalaym [24]
Independent: Hours (Domain)

Dependent: Money (Range)

Domain: [0,30]
Range: [0,330]
7 0
4 years ago
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TV advertising agencies face increasing challenges in reaching audience members because viewing TV programs via digital streamin
oksian1 [2.3K]

Answer:

The 99% confidence level for the proportion of all adult Americans who watched streamed programming up to that point in time is (0.514, 0.566). This means that we are 99% sure that the true proportion of all American adults surveyed said they have watched digitally streamed TV programming on some type of device is between 0.514 and 0.566.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

A poll reported that 54% of 2342 American adults surveyed said they have watched digitally streamed TV programming on some type of device.

This means that \pi = 0.54, n = 2342

99% confidence level

So \alpha = 0.01, z is the value of Z that has a p-value of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.54 - 2.575\sqrt{\frac{0.54*0.46}{2342}} = 0.514

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.54 + 2.575\sqrt{\frac{0.54*0.46}{2342}} = 0.566

The 99% confidence level for the proportion of all adult Americans who watched streamed programming up to that point in time is (0.514, 0.566). This means that we are 99% sure that the true proportion of all American adults surveyed said they have watched digitally streamed TV programming on some type of device is between 0.514 and 0.566.

6 0
3 years ago
PLZ HURRY! WILL GIVE BRAINILEST TO FIRST CORRECT ANSWER!!!!!!!!
tatuchka [14]

Answer:

2.36

Step-by-step explanation:

order of operations : pemdas

parenthesis, exponents

multiplication, division

addition, substraction

first parenthesis, so

(32-4) = 28

parenthesis again

[10+28] = 38

now you have

90/38 = 45/19 = 2.36

6 0
3 years ago
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A student got 12 out of 15 questions correct on their quiz. What percent of the questions did the student get correct?
Nastasia [14]

Answer:

i think it would be 21 percent he got wrong so if he got 21 percent wrong it would be 79 percent right

Step-by-step explanation:

beacause if it was 10 question it would be 30 percent wrong since its 15 you divide it by 100 which would be 7 and 7 times 3 is 21

sorry if im wrong

7 0
3 years ago
Please help i don’t understand
nikklg [1K]
Step three is incorrect there is no step three
8 0
3 years ago
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