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Answer:
To find f-¹(x) of f(x) equate f(x) to y
That's
f(x) = y
So we have
Next interchange the variables that's x becomes y and y becomes x
That's
Next make y the subject
Cross multiply
We have
4y - 7 = 10x
Move -7 to the right side of the equation
4y = 10x + 7
Divide both sides by 4
We have the final answer as
So
Hope this helps you
Answer:
The value is
Step-by-step explanation:
From the question we are told that
The null hypothesis is
The level of significance is
From the z table the critical value of considering the two tails of the normal curve( This is because this a two tailed test ) is
Hence the critical value is