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stich3 [128]
3 years ago
6

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be

3. What sample mean would have a confidence level of 95% or a 2.5% margin of error?
Mathematics
1 answer:
Masja [62]3 years ago
5 0

Answer:

Mean of the population having 6"-9" Hatching =38

Standard Deviation =4

Step-by-step explanation:

Confidence interval of 95% means that 95% of data lie within two standard deviations.

That is data values lie between 38-2×4 to 38 +2×4.

⇒Which is 38-8 to 38+8.

⇒30 to 46.

it is also given that margin of error is 2.5%.

So, the data value will lie between

Mean of beginning value to extreme value of 95% confidence level

  

So, Sample mean of this observation having 2.5% margin of error = 38

Option D:→ 38

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over the past ten years, the town's population doubled in size. the population is currently 12,000. what was the population ten
IceJOKER [234]
The population ten years ago was 6,000.

Because the population doubled you divide 12,000 by 2

12,000 / 2 = 6,000
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What is the mode of the following numbers?<br> 3,7, 5, 2, 5, 5, 2,5
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3 years ago
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A city's population is increasing at a rate of 2% per year.
Mariana [72]

Based on the information the number of people that will there after 20 years is: d.)  2.97 million.

Using this formula

P(t) = Population ×(1+ rate)^t

Where:

Population=2 million

rate=2%

time=20 years

Let plug in the formula

P(t) = 2×(1+.02)^20

P(t) = 2×(1.02)^20

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Inconclusion the number of people that will there after 20 years is: d.)  2.97 million.

Learn more about population here:brainly.com/question/25630111

6 0
2 years ago
What is the value of y? y = 30 y = 50 y = 110 y = 130
____ [38]

Answer:

The value of y is 50.

Step-by-step explanation:

It is 50 because it is the exact same as the first degree.

And at least give a picture of problem please so we can solve it easily!! hope you next time!!

8 0
2 years ago
For all parts of this question, use the function y + 2 = 3(x + 4)
vekshin1

i would start by simplifying the equation to get y by itself, you don't need to do this, but it makes it a little easier

y + 2 = 3 ( x + 4) distribute the 3 through the parenthesis

y + 2 = 3x + 12. subtract 2 from both sides

y = 3x +10

now to fill in the chart simply plug in the value of x to see what value of y it produces

y = 3(-2) +10

y = -6+10

y = 4

(-2,4)

y = 3(0) + 10

y = 0 + 10

y = 10

(0,10)

y = 3(2)+10

y = 6 + 10

y = 16

(2,16)

y = 3(4) + 10

y = 12 + 10

y = 22

(4,22)

8 0
3 years ago
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