Answer:
Step-by-step explanation:
a)
Confidence interval in less than symbol expressed as
Where 
is sample mean and 
is margin of error.
b)
The given t interval is 
That is 
and 
Solve these two equation by adding together.
Solve this value of \bar{x} in equation and solve for
Best point estimate of 
Best point estimate of margin of error = 0.193
c)
Since sample size = 100 which is sufficiently large (Greater than 30) , it is no need to confirm that
sample data appear to be form a population with normal distribution.
Answer:
Step-by-step explanation:
The slope of a line passing through points 
and 
is:
Plugging in any two points in the table we have:
<u>First problem:</u>
<u />
<u />
<u>Second problem:</u>
<u />
<u />
Answer:
B(-10)=-6
Step-by-step explanation:
we have
B(x)=x+4
we know that
B(-10) is the value of the function B(x) for the value of x=-10
so
substitute the value of x=-10 in the function
B(-10)=-10+4=-6
therefore
B(-10)=-6
Answer:
- 
Step-by-step explanation:
Given
← cancel sec x on numerator/ denominator
= 
= -
