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.
Answer:
$157.89
Step-by-step explanation:
you could say that 150 is 95% of what the original bill was
in equation form: 150 = .95x
150/.95 = 158.89
158.89 = x
Angle 1: 33, Angle 2: 147
Step-by-step explanation:
If I have angle x, and its supplement angle is 3 times its supplement increased by 48 degrees, then I know the following:
Angle 1 = x
Angle 2 = 3x+48
Both of these angles add to 180 degrees.
x+(3x+48)=180
= 4x+48=180
=4x=132
=x=33, Angle 1 = 33 degrees
So angle 1 is 33 degrees
that should mean that angle 2 is 147