Complete Question
A biologist reports a confidence interval of (3.5,4.9) when estimating the mean height (in centimeters) of a sample of seedlings. What is the estimated margin of error and the sample mean?
Answer:
The margin of error is 
The sample mean is 
Step-by-step explanation:
from the question we are told that
The upper limit is 
The lower limit is 
Generally the margin of error is mathematically represented as



Generally the sample mean is mathematically evaluated as

=> 
=> 
Answer:
A____N____C
AN= NC
4x-7=5x-15
5x-4x= 15-7
x= 8
NC = 5x-15=5(8) – 15 = 40 – 15 = 25
I hope I helped you^_^
Daniel was 10 three years ago, and Ben was 30. Now, Ben is 33.
Answer:
a = u - k + b
Step-by-step explanation:
u = a + k - b
u - k + b = a+ k - b - k + b
u - k + b = a