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iren2701 [21]
2 years ago
12

Help filler filler filler

Mathematics
1 answer:
julsineya [31]2 years ago
8 0
I got 16 but not 100% sure if it’s right
Sorry if it’s wrong, I tried my best
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Suppose that the ages of members in a large billiards league have a known standard deviation of σ = 12 σ=12sigma, equals, 12 yea
asambeis [7]

Answer:

n\geq 23

Step-by-step explanation:

-For a known standard deviation, the sample size for a desired margin of error is calculated using the formula:

n\geq (\frac{z\sigma}{ME})^2

Where:

  • \sigma is the standard deviation
  • ME is the desired margin of error.

We substitute our given values to calculate the sample size:

n\geq (\frac{z\sigma}{ME})^2\\\\\geq (\frac{1.96\times 12}{5})^2\\\\\geq 22.13\approx23

Hence, the smallest desired sample size is 23

3 0
3 years ago
The equation of a circle is given below. Identify the center and radius. Then graph the circle.
Blizzard [7]

Answer:

  • Center = (3, 0)
  • Radius = 3
  • Graph = see below

Concept:

Here, we need to know the idea of the circle equation.

Circle equation: (x - h)² + (y - k)² = r²

(h, k) = center

r = radius

x = variable

y = variable

Solve:

<u>Given expression </u>

(x - 3)² + y² = 9

<u>Find the point of the center</u>

(h, k) = \boxed{(3,0)}

<u>Find the length of the radius</u>

r² = 9

\boxed{r=3}

Hope this helps!! :)

Please let me know if you have any questions

3 0
2 years ago
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Ravi made 4 identical necklaces each having beads and a pendant. The total cost of the beads and pendants are for all four neckl
vekshin1

Answer:

Each pendant cost $3.30

Step-by-step explanation:

You would subtract $13.20 from $26.20  and get $13.20. You take $13.20 and divide it by 4. You would get $3.30.

3 0
3 years ago
Andrew wants to build a slide for his daughter’s tree house. If the tree house is 5 ft off the ground and he wants the slide to
Lapatulllka [165]
Andrew is wanting to build a slide for his daughter's tree house in the backyard. The tree house is approximately 5 feet off the ground and he wants the slide to have a 30 degree angle with the ground. He will need to by 10 ft of sliding board. 
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2 years ago
Mia spends 45 min reading each day. She does 2/5 of her reading at school. How many minutes does Mia spend reading at school?
Cerrena [4.2K]
Mia spends 18 minutes reading at school.
3 0
3 years ago
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