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yulyashka [42]
3 years ago
11

Solve this problem 7|8-3h|=21h-49

Mathematics
1 answer:
tatiyna3 years ago
5 0

Answer:

h=5/2

Step-by-step explanation:

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When the sample size and the sample proportion remain the same, a 90 percent confidence interval for a population proportion p w
deff fn [24]

Answer:

A 90% confidence interval for <em>p</em> will be <u>narrower </u>than the 99% confidence interval.

Step-by-step explanation:

The formula to compute the (1 - <em>α</em>) % confidence interval for a population proportion is:

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

Here \hat p is the sample proportion.

The margin of error of the confidence interval is:

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

The MOE is dependent on:

  1. Confidence level
  2. Standard deviation
  3. Sample size

The MOE is directly related to the confidence level and standard deviation.

So if any of the two increases then the MOE also increases, thus widening the confidence interval.

And the MOE is inversely related to the sample size.

So if the sample increases the MOE decreases and vice versa.

It is provided that the sample size and the sample proportion are not altered.

The critical value of <em>z</em> for 90% confidence level is:

z_{\alpha/2}= z_{0.10/2}=z_{0.05}=1.645

And the critical value of <em>z</em> for 99% confidence level is:

z_{\alpha/2}= z_{0.05/2}=z_{0.05}=1.96

So as the confidence level increases the critical value increases.

Thus, a 90% confidence interval for <em>p</em> will be narrower than the 99% confidence interval.

6 0
2 years ago
Please check my work:
11Alexandr11 [23.1K]

Answer:

1) C (5,-11)

2)A and C

3)B

4)A

8 0
2 years ago
Answer for brainlist &amp; extra points &lt;3
DENIUS [597]

Answer:

Equation:500÷8×2

Answer:125

3 0
2 years ago
Fine the area of the shaped trapezium in the rectangle below
Ksenya-84 [330]
At first find the area of rectangle:
(x + 4)*(x + 1) = x^2 + 5x + 4
Then find the area of triangle:
\frac{(x+1)(x-3)}{2} =  \frac{x^2-2x-3}{2}
Then you must do like this
Area of rectangle - Area of triangle = Area of the shaded
x^2+5x+4 - (\frac{x^2-2x-3}{2})
7 0
2 years ago
Write down the letter of the shape that is congruent to the shaded shaPe
guapka [62]

Answer:

E looks like it is most congruent

Step-by-step explanation:

7 0
2 years ago
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