Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-

Given : Sample mean :
hours
Standard deviation
hours
Sample size : n=90, which is a large sample(n<30), so we use z-test.
Significance level: 
Critical value : 
Then , the confidence interval for population mean will be :-

Hence, the 90% confidence interval for the mean life
of all light bulbs of this type. is 
The relationship between the diameter of the tree trunk snd the height of the tree is as the diameter increases the tree will get taller therefor the height will increase too. As you can see on the scatter graph the points are going in a upwards slant meaning its increasing.
Let's solve this step-by-step! :)
-(3/2) * 3
= -(9/2)
I hope this helped!! :D
Answer:
I would say the square root of 48 is the odd one out because it is the only irrational number
All the other numbers can be written as p/q except sqrt 48