Answer:
27
Question:
Find so that
is a solution to
.
Step-by-step explanation:
So we are asked to replace with -14 and solve for
in the equation:
.
with
:
Add 42 on both sides:
Divide both sides by 2:
.
So the -coordinate that corresponding to
is
.
Verify that:
is a point satisfying
.
Replace with 27 and
with -14:
is true so our work must be right.
Answer:
The 90% confidence interval estimate of the mean annual income of all company presidents is ($579,545, $590,580).
Step-by-step explanation:
The information provided is:
The critical value of <em>z</em> for 90% confidence level is, 1.645.
Compute the 90% confidence interval estimate of the mean annual income of all company presidents as follows:
Thus, the 90% confidence interval estimate of the mean annual income of all company presidents is ($579,545, $590,580).
This interval implies that there is 90% probability that the true mean annual income of all company presidents is within this interval.