2 years ago

F(x)=x+3 and g(x)=x-5

Mathematics

1 answer:

ivann1987 [24]2 years ago

3 0

What’s the question?

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Double a number is equal to the number decreased by five?

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2(-5)=(-5)-5

-10=-10

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2 years ago

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A bag contains 6 red and 10 black marbles. If Mia picks a marble, records its color, and returns it to the bag 200 times, how ma

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2 years ago

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2 years ago

What sample size should be used if we would like to estimate the mean age of the college students at a particular campus with 95

nevsk [136]

Answer: 12

Step-by-step explanation:

The formula to find the sample size is given by:-

$n=(\dfrac{z_c\cdot \sigma}{E})^2$ , where $\sigma$ is the population standard deviation, $z_c$ is the z-value for the $(1-\alpha)$ confidence interval and E is the margin of error .

As per given , we have

Population standard deviation : $\sigma=5.1$

z-value for 95% confidence interval : $z_c=1.960$

Margin of error : E= 3

Then, the required minimum sample :-

$n=(\dfrac{(1.96)\cdot (5.1)}{3})^2\\\\\Rightarrow\ n=(3.332)^2=11.102224\approx12$

Hence, the required minimum sample size = 12

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2 years ago