That would be : 3:5 = 12:20....because 3/5 = 12/20
Answer:
There is no evidence that the doors are too long and need to be trimmed (H₀ is accepted)
Step-by-step explanation:

The null hypothesis, 
Alternative hypothesis, 
Test statistic is calculated as follows:

Find the P-value
P(z > 1.27) = 1 - P(z < 1.27)
P(z > 1.27) = 1 - 0.898
P(z > 1.27) = 0.102
Significance level, α = 0.01
Since P - value(0.102) is greater than α (0.01), the null hypothesis will be accepted.
Answer:
V = 51.08 in^3
Step-by-step explanation:
Look at the attachment