Answer: 
Step-by-step explanation:
Given : Sample size : n= 33
Critical value for significance level of
: 
Sample mean : 
Standard deviation : 
We assume that this is a normal distribution.
Margin of error : 
i.e. 
Hence, the margin of error is 
Answer:
5 hours
Step-by-step explanation:
1.5 (hours) / 3(cars) = 0.5 hours per car
0.5 x 10 = 5
Answer: 37
Step-by-step explanation:
-5x - 15 = - 200
-5x = -200 + 15
-5x = -185
x = 37
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