Answer:
plz put one qusetion a time plz so i can put it down better
Step-by-step explanation:
Answer:
(22.12, 27.48)
Step-by-step explanation:
Given : Significance level : 
Sample size : n= 8 , which is a small sample (n<30), so we use t-test.
Critical values using t-distribution: 
Sample mean : 
Standard deviation : 
The confidence interval for population means is given by :-

i.e. 

Hence, the 95% confidence interval, assuming the times are normally distributed.= (22.12, 27.48)
Answer: The answer is C. 5
Step-by-step explanation:
Just took the test on edg.
Answer: -3n-2.
Because for the first term, for example, plug in 1, you'll get -3(1)-2=-3-2=-5, which is the first one. Try it with all terms.
7(x+4)>0
Distribute 7. (multiply by x and 4)
7x+28>0
Subtract 28 on both sides.
7x>-28
Divide by 7 into both sides.
x>-4
x>-4 is the answer.
I hope this helps!
~kaikers