Answer:
See below ~
Step-by-step explanation:






Answer:
D is your answer.
Step-by-step explanation:
if you do 2 numbers to the right you get 3 and now the half would go in between 3 which would make your answer 3 and one half
Answer:
-72 i notice you're having trouble message me and ill help you
Answer:
what do you need help with?
Step-by-step explanation:
Answer:
There is sufficient evidence to conclude that six inches spacing has a higher mean failure pressure than 8 inches
Reject
level of significance
Step-by-step explanation:
From the question we are told that:
Sample size 1 
Spacing 1 
Mean 1 
Standard deviation 1 
Sample size 2 
Spacing 2 
Mean 1 
Standard deviation 1
Generally the hypothesis is mathematically given as
Null 
Alternative 
Generally the equation for pooled estimate is mathematically given by

Therefore


Generally the equation for test statistics is mathematically given by



Therefore From table


Therefore
There is sufficient evidence to conclude that six inches spacing has a higher mean failure pressure than 8 inches
Reject
level of significance