Ask question

Ask question

All categories

4 years ago

7

Please help me. I’ll mark brainliest!!!

1 answer:

Oksanka [162]4 years ago

7 0

Answer:

B

Step-by-step explanation:

A chord is a line segment joining two points on any curve, for instance, an ellipse. A chord that passes through a circle's center point is the circle's diameter. Don't get this confused for diameter. The diameter is P to R.

You might be interested in

Rewrite the expression by factoring out the greatest common factor 8y-12

stepan [7]

4(2y-3)

See explanation:

3 0

3 years ago

A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n=918 and x=521 who said "

s2008m [1.1K]

Answer:

B) The margin of error is 0.0269.

C) The confidence interval is (0.5406, 0.5944).

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 margin of error is:

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

In the poll, n=918 and x=521 who said "yes."

This means that $n = 918, \pi = \frac{521}{918} = 0.5675$

90% confidence level

So $\alpha = 0.1$ , z is the value of Z that has a pvalue of $1 - \frac{0.1}{2} = 0.95$ , so $Z = 1.645$ .

B) Identify the value of the margin of error E.

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

$M = 1.645\sqrt{\frac{0.5675*0.4325}{918}} = 0.0269$

The margin of error is 0.0269.

C) construct the confidence interval.

$\pi \pm M$

So

$\pi - M = 0.5675 - 0.0269 = 0.5406$

$\pi + M = 0.5675 + 0.0269 = 0.5944$

The confidence interval is (0.5406, 0.5944).

5 0

3 years ago

Freddy bought 3 bags of pebbles to put in his fish tank. Each bag contains 295 pebbles. After he put the right amount of pebbles

vitfil [10]

295 x 3 = 885

885-104 = 781

781 pebbles

7 0

3 years ago

Write the equations of the horizontal and vertical lines through the given point.

Tema [17]

#7

vertical x = 5

and

horizontal y=6

#8

vertical x = -2

and

horizontal y=-3

btw

#10: -10x - 3

#11: -5x -3

4 0

4 years ago

Pleaseee helpp ill give brainliest

vitfil [10]

NOPE NOT AT ALL the line never goes through 0 on the x axis

8 0

3 years ago

Read 2 more answers