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3 years ago

HELP ASAP!!

Mathematics

2 answers:

tensa zangetsu [6.8K]3 years ago

5 0

The answef is 1.83 because if you notice all of them are being divided by 38your answer is 16.5 because youre dividing all dog food in cups by wet food 3 times like 4.5/3 is 1.5 and so on

lesya692 [45]3 years ago

4 0

Hi! Well, lets think! 9 divided by 3 is 3. We all know 3x2 is 6. And if we use a calculator we come to find out that 4.5 divided by 1.5 is 3.......All these numbers have 3 in common. So if we multiply 5.5x3 we have 16.5 as the answer. Im doing the same test right now lol #k12gang but i hope this helped!

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A 90 percent confidence interval is to be created to estimate the proportion of television viewers in a certain area who favor m

Dominik [7]

Answer:

This means that the first interval, with 9000 viewers, is 3 times as narrower as the second interval, with 1000 viewers.

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 zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The width of the interval is:

$W = 2z\sqrt{\frac{\pi(1-\pi)}{n}}$

In this sample:

Two 90% intervals, with different lenghts. So both have the same values for z an $\pi$

Interval A:

9000 viewers.

So the width is

$W_{A} = 2z\sqrt{\frac{\pi(1-\pi)}{9000}}$

Interval B:

100 viewers

So the width is

$W_{B} = 2z\sqrt{\frac{\pi(1-\pi)}{1000}}$

Relationship between the widths:

$R = \frac{W_{A}}{W_{B}} = \frac{2z\sqrt{\frac{\pi(1-\pi)}{9000}}}{2z\sqrt{\frac{\pi(1-\pi)}{1000}}} = \frac{\sqrt{1000}}{\sqrt{9000}} = \frac{\sqrt{1}}{\sqrt{9}} = \frac{1}{3}$

This means that the first interval, with 9000 viewers, is 3 times as narrower as the second interval, with 1000 viewers.

8 0

3 years ago

Please help !! Will grant brainliest ..

Free_Kalibri [48]

(3,3)

(9,4)

(3,5)

(4,4)

5 0

3 years ago

Is a gpa of 2.5 higher than 2.0

tatyana61 [14]

Answer:

Yes

Step-by-step explanation: Its .5 higher

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2 years ago

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babymother [125]

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