Answer:
I just + , - , x , ÷ then it will =
Step-by-step explanation:
Hope this helps
!
Answer:
up
Step-by-step explanation:
Since this is written as y = function of x, it will open up or down
y = 3x^2 -5x -10
The coefficient of x^2 is positive so it will open up
Answer: P and U
Step-by-step explanation:
Answer: 
Step-by-step explanation:
The confidence interval for population mean is given by :-

Given : Sample size :
, which is a large sample , so we apply z-test .
Sample mean : 
Standard deviation : 
Significance level : 
Critical value : 
Now, a confidence interval at the 95% level of confidence will be :-
