Answer: C.
Step-by-step explanation:
C. Without a table or graph, you might forget what an equation represents.
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Answer:
D
Step-by-step explanation:
Answer:
The marginal error is 2.355
Confidence interval is 
The LB and UB are 34.645 and 39.3555 respectively.
Step-by-step explanation:
Consider the provided information.
n = 49, s = 8.2 c = 95%and 
Degree of freedom is: n-1 = 49-1 = 48.

From the table 
Marginal error is:





Hence, the marginal error is 2.355.
Part (B)
95% confidence interval estimate



Thus, the LB and UB are 34.645 and 39.3555 respectively.
Answer:
2/5
Step-by-step explanation:
The slope of the line
y=2/5x-4
is 2/5 since it is in the form y = mx+b where m is the slope
Parallel lines have the same slope so a line that is parallel to y=2/5x-4 has a slope of 2/5