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3 years ago

The quantities x And u are proportional. What is the missing value in the table

Mathematics

1 answer:

kherson [118]3 years ago

7 0

Answer:

Step-by-step explanation:

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A police officer would like to estimate the proportion of petty theft cases that have gone unsolved in a large city. He takes a

nata0808 [166]

Answer:

$0.625 \pm 1.645*0.0571$

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

$\pi$ is the estimate

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ , also called the critical value.

The standard error is:

$s = \sqrt{\frac{\pi(1-\pi)}{n}}$

90% confidence level critical value

So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.955$ , so $z = 1.645$ .

Estimate:

72 petty theft cases and finds 45 of these have gone unsolved.

So $\pi = \frac{45}{72} = 0.625$

Standard error:

$s = \sqrt{\frac{\pi(1-\pi)}{n}} = \sqrt{\frac{0.625*0.375}{72}} = 0.0571$

Answer:

$0.625 \pm 1.645*0.0571$

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3 years ago

PLEASE PLEASE help me out!!!<br> Trying to get my grade up

schepotkina [342]

(4, 1) the process is shown in the following picture

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2 years ago

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I NEED ANSWER SUPER BAD PLEASE!!!!!!!!!!!What is the greatest integer less than 100 for which the greatest common divisor of tha

PtichkaEL [24]

Answer:

Step-by-step explanation:

We will list out the numbers which are factors of 12. They include:

1, 2, 3, 4, 6, 12.

We need to get the highest number that has its greatest factor to be 4. It means that 6 and 12 cannot divide it.

To do this, we will write out the multiples of 4. They include:

4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88,92,96.

We will have to choose the highest number which only 4 can divide and 6 and 12 cannot divide.

Since we are looking for the largest, We can try dividing all the numbers by 4, 6, and 12 starting from 96.

We will quickly see that 4 can divide 92 but 6 and 12 cannot.

This gives us 92 as the answer.

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3 years ago

Graph the linear function r(x)=2

wlad13 [49]

It's a linear function with a slope 0.

It's a horizontal line (look at the picture).

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3 years ago

?Write and evaluate the following algebraic expression when the product of 24 and a number Which is the correct expression and p

lara31 [8.8K]

Answer:

24x

Step-by-step explanation:

The product of 24 and a number means that 24 is multiplied by some number. When we use the term "some number" in math, we often use "x" as a representation of that number.

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3 years ago

The quantities x And u are proportional. What is the missing value in the table​

The quantities x And u are proportional. What is the missing value in the table