exam Maths Puzzle Numerical Ability

use a number line to find the sum of the numbers: 3 and 5

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exam Other Question

Hello,
How do i solve this equation:

3^x = 1/9

thank you! What is the level of significance?
A) Probability of a Type II error
B) Probability of a Type I error
C) z-value of 1.96
D) Beta error
E) None of the above