Find the value of f(x), when x=4

Mathematics

1 answer:

OleMash [197]2 years ago

6 0

Answer:

f(4)

Step-by-step explanation:

replace the x in f(x) with 4

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Answer:y=2x+5

Step-by-step explanation:

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2 years ago

Consider two x distributions corresponding to the same x distribution. The first x distribution is based on samples of size n =

Tanya [424]

Answer:

The distribution with n = 225 will give a smaller standard error.

Since sigma x = sigma/√n, dividing by the square root of 225 will result in a small standard error regardless of the value of sigma.

Step-by-step explanation:

Standard error is given by standard deviation (sigma) divided by square root of sample size (√n).

The distribution with n = 225 would give a smaller standard error because the square root of 225 is 15. The inverse of 15 multiplied by sigma is approximately 0.07sigma which is smaller compared to the distribution n = 100. Square of 100 is 10, inverse of 10 multiplied by sigma is 0.1sigma.

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Answer:

The correct option is C. 9 houses could 18 men paint in 6 hours.

Step by step explanation:

Let the number of houses paint by 18 men in 6 hours be x.

One man can paint one house in 12 hours.

The part of house painted by a man in 1 hour is $\frac{1}{12}$ .