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Lelechka [254]
3 years ago
9

A city is growing at the rate of 0.3% annually. If there were 3,278,000 residents in the city in 2015, find how many (to the nea

rest ten-thousand) are living in that city in 2021. Use y = 3,278,000(2.7)0.003t , where t represents the number of years since 2015.
Mathematics
2 answers:
ss7ja [257]3 years ago
3 0
The formula is
A=pe^rt
A ?
P 3,278,000
E constant, it equals 2.7
R 0.003
T 2,021−2,015=6 years

A=3,278,000×e^(0.003×6)
A=3,337,538
lys-0071 [83]3 years ago
3 0

Answer:

3330448

Step-by-step explanation:

We must evaluate the population from 2015 to 2021 to the nearest ten-thousand. Using the following expression:

y=3278000*(2.17)^0.003*t

where t represents the number of years since 2015 and 2.17 is the logarithmic function e. The number of years since 2015 to 2021 is 7 years.Substitue t=7 into the expression:

y=3278000*(2.17)^0.003*(7)=3278000*(1.016)=3330448

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The critical f-value when the sample size for the numerator and the  denominator is given using a two-tailed test will be 0.12 and 14.88.

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The sample size for the numerator = 6,

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Numerator degree of freedom = 6 - 1 = 5,

And,

The sample size for the denominator = 4,

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Denominator degree of freedom = 4 - 1 = 3

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The significance level = \frac{0.10}{2} = 0.05

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