Answer:
90% confidence interval: (70.41,86.89)
Step-by-step explanation:
We are given the following in the question:
Point estimate = 78.65
Margin of error, E = 8.24
Confidence level = 90%
Significance level = 10%
Formula:
Putting the values, we get,
(70.41,86.89) is the required 90% confidence interval.
Answer:
The answer is
Step-by-step explanation:
To find an equation of a line in point slope form when given the slope and a point we use the formula
From the question we have the final answer as
Hope this helps you
Answer:
The length of the tunnel is 7.66667 inch
Step-by-step explanation:
We are given
1 inch =60 miles
now, we can find for 1 mile
so,
60 miles = 1 inch
we get
we are given
total length is 460 miles
so, we can multiply both sides by 460
now, we can simplify it
So,
The length of the tunnel is 7.66667 inch