Answer:
The required confidence inteval = 94.9%.
Step-by-step explanation:
Confidence interval: Mean ± Margin of error
Given: A confidence interval for the true mean diameter of all oak trees in the neighbourhood is calculated to be (36.191, 42.969).
i.e. Mean + Margin of error = 42.969 (i)
Mean - Margin of error = 36.191 (ii)
Adding (i) and (ii), we get

Margin of error = 42.969-39.58 [from (i)]
= 3.389
Margin of error = 
here n= 25 
i.e.

Using excel function 1-TDIST.2T(2.054,24)
The required confidence inteval = 94.9%.
Answer:
1st plan--> 40+0.11x
2nd plan--> 49+0.09x
Dont know wat u want
Step-by-step explanation:
Answer:
the answer was not found :(
Step-by-step explanation:
Merry Christmas and happy holidays!
Answer:
169.56
Step-by-step explanation:
54*3.14 = 169.56
this is the answer on the test