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aleksley [76]
3 years ago
5

What is another way to check my answer for the problem 0.25 x 7

Mathematics
2 answers:
timama [110]3 years ago
6 0
Yhu can divide it......
Zanzabum3 years ago
4 0

Answer:

you can divide the problem

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According to the U.S. Census Bureau, 42% of men who worked at home were college graduates. In a sample of 480 women who worked a
Likurg_2 [28]

Answer:

1) 0.327 - 0.539 \sqrt{\frac{0.327(1-0.327)}{480}}=0.315

The point estimate for the proportion of college graduates among women who work at home is 0.327

2) 0.327 - 0.539 \sqrt{\frac{0.327(1-0.327)}{480}}=0.315

0.327 + 0.539 \sqrt{\frac{0.327(1-0.327)}{480}}=0.339

The 80% confidence interval is given by (0.315; 0.339)

Step-by-step explanation:

For this case we have the following info given:

X = 157 represent the women who worked at home who were college graduates

n = 480 the sample size selected

Part 1

In order to find the proportion of college graduates among women who work at home and we can use the following formula:

\hat p=\frac{X}{n} = \frac{157}{480}= 0.327

The point estimate for the proportion of college graduates among women who work at home is 0.327

Part 2

Construct an 80% confidence interval for the proportion of women who work at home who are college graduates. Round the answer to three decimal places. An 80% confidence interval for the proportion of women who work at home Is < p <

The confidence interval for the true proportion would be given by this formula

\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}

For the 80% confidence interval the value for the significance is\alpha=1-0.8=0.2 and \alpha/2=0.1, the critical value would be given by:

z_{\alpha/2}=0.539

And replacing we goot:

0.327 - 0.539 \sqrt{\frac{0.327(1-0.327)}{480}}=0.315

0.327 + 0.539 \sqrt{\frac{0.327(1-0.327)}{480}}=0.339

The 80% confidence interval is given by (0.315; 0.339)

6 0
3 years ago
4x+3y=-6 standard to slope intercept form
miss Akunina [59]

Answer:

y = -4/3x -2

Step-by-step explanation:

Slope intercept for is y = mx+b where m is the slope and b is the y intercept

4x+3y=-6

We need to solve for y

Subtract 4x from each side

4x-4x+3y=-4x-6

3y = -4x-6

Divide each side by 3

3y/3 = -4x/3 -6/3

y = -4/3x -2

The slope is 4/3 and the y intercept is -2

5 0
3 years ago
What is the sum of the roots of the polynomial shown below? x^3+2x^2-11x-12
tekilochka [14]
The answer to your question is -2.
8 0
4 years ago
If f(x)=x-2, which of the following is the inverse of F(x)
sergiy2304 [10]
The answer would be 2. This is because inverse means opposite, and since f(x)=-2, then that means the inverse would be 2.
5 0
3 years ago
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Is seven eighths greater than two eights
o-na [289]

It is because there are 7 1/8 and it is bigger than 2 1/8.
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4 years ago
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