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skad [1K]
3 years ago
14

True or false: in building a confidence interval for a proportion you can cut the margin of error in half (from e to e/2 by doub

ling the sample size (from n to 2n.
Mathematics
1 answer:
pav-90 [236]3 years ago
3 0
I think this is false. p +/- z*sqrt (pq/n) . Notice that the formula has sqrt of n.


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The first 2 terms of geometric sequnce are shown 3 and 9. What is the next term in the geometric sequence?
Bad White [126]
The next number is 27.
You can find this by finding the common ratio between 3 and 9 and multiplying 9 by the common ratio. The common ratio is 3
8 0
3 years ago
if a town with a population of 500 doubles in size ever 9 years, what will the population be 36 years from now?
s344n2d4d5 [400]

The population of the town in 36 years would be  8000.

<h3>What would be the population of the town in 36 years?</h3>

The formula that can be used to determine the town's population is:
FV = P (1 + r)^n

Where:

  • FV = Future value
  • P = Present value
  • R = rate of growth = 100%
  • N = number of years = 36/9 = 4

500 x 2^4 = 8000

To learn more about future value, please check: brainly.com/question/18760477

4 0
2 years ago
Find (if possible) the complement and the supplement of each angle. (if not possible, enter impossible.) (a) π 10 complement rad
blagie [28]

In this question, we have to find the complement and supplement of the given angles .

Complementary angles are those angles whose sum is 90 degree and supplementary angles are those angles whose sum is 180 degree.

So to find the complement and supplement angles, we need to subtract the given angles from pi/2 and pi respectively .

a.

\frac{ \pi}{10}&#10;\\&#10;complement  \ angle = \frac{ \pi}{2} - \frac{ \pi}{10}     \\                             = \frac{4 \pi}{10} = \frac{ 2 \pi}{5}&#10;\\&#10;Supplement  \ angle = \pi - \frac{ \pi}{10} = \frac{9 \pi}{10}

b.

\frac{9 \pi}{10}&#10;\\&#10;Complement \ angle = \frac{ \pi}{2} - \frac{9 \pi}{10} = \frac{-4 \pi}{10} = -\frac{2 \pi}{5}&#10;\\&#10;Supplement \ angle = \pi - \frac{9 \pi}{10} = \frac{ \pi}{10}

4 0
3 years ago
Write an equation of the line that passes through (4,-1) and is parallel to the line -3x +y= 7
Gala2k [10]

Answer:

y = 3x -13

Step-by-step explanation:

y = 3x + 7

-1 = 3(4) + b

-1 = 12 + b

-13 = b

y = 3x -13

4 0
3 years ago
PLEASE HELP I WILL MARK BRAINLEST 20 POINTS<br> what would be x in this ordered pair (3 -8)
telo118 [61]

Answer:

3

Step-by-step explanation:

X goes first

4 0
3 years ago
Read 2 more answers
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