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<span>The standard error of a distribution of sample proprtions is defined as the standard deviation of the distribution and is symbolized by
and is calculated by the formula
</span>.
Given a <span>random sample of n = 800 observations and a sample proportion p = 0.44.
To test:
The standard error rounded to four decimal places is given by:
</span>
and is calculated by the formula
Given a <span>random sample of n = 800 observations and a sample proportion p = 0.44.
To test:
The standard error rounded to four decimal places is given by:
Answer:
f⁻¹(x) = + 7
Step-by-step explanation:
The inverse of a function reverses the operations performed by the function in the question such if f(x) = y, then we have, f⁻¹(y) = x, which reverses the operation of the first function.
The inverse of a function f(x) = 4·㏒₂(x - 7) is found as follows;
We have;
y = 4·㏒₂(x - 7)
We substitute x for y to get;
x = 4·㏒₂(y - 7) which gives;
x/4 = ㏒₂(y - 7)
= y - 7
y = + 7
Therefore;
f⁻¹(x) = + 7.