Answer:
X = 3
Y = all real numbers
Step-by-step explanation:
x is the input
y is the output
The equation would be x = 3
Solution :
a).
Given : Number of times, n = 25
Sigma, σ = 0.200 kg
Weight, μ = 13 kg
Therefore the hypothesis should be tested are :


b). When the value of 
Test statics :



= 45.5
P-value = 2 x P(Z > 45.5)
= 2 x 1 -P (Z < 45.5) = 0
Reject the null hypothesis if P value < α = 0.01 level of significance.
So reject the null hypothesis.
Therefore, we conclude that the true mean measured weight differs from 13 kg.
Like in real life problems?
if yes then when conducting a survey, when grading quizzes/assignments, etc
All I can think of is (5,0) (0,5)
Hopefully it helps.