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 :-
C) you conclude that less than half of the cars on the dealership’s lot cost more than$34,330
Answer:
12? I'm not sure. That's the answer I think?
Measure of angle b= 27°
It’s a right angle, so 90-63=27!!!!!
Formula= Base times height divided by 2
6 x 7= 42
42/ 2
answer= 21
