Concept explainers
a.
To calculate: The mean of deepest points of the Great Lakes.
a.

Answer to Problem 47PPS
The mean of deepest points of the Great Lakes is
Explanation of Solution
Given information:
The table that shows the deepest point of Great Lakes.
Formula used:
Mean of n numbers is calculated as sum of n terms divided by number of terms.
Calculation:
Consider the given table,
Recall that mean of n numbers is calculated as sum of n terms divided by number of terms.
Apply it,
Thus, mean of the deepest points of Great lakes is
b.
To calculate: The new mean if each of the deepest points were 10 meters higher and compare it with mean calculated in part (a).
b.

Answer to Problem 47PPS
The new mean of the deepest points of Great lakes is
Explanation of Solution
Given information:
The table that shows the deepest point of Great Lakes.
Formula used:
Mean of n numbers is calculated as sum of n terms divided by number of terms.
Calculation:
Consider the given table,
Since, each of the deepest points have to be higher by 10 points, so, new deepest points will be calculated as,
Recall that mean of n numbers is calculated as sum of n terms divided by number of terms.
So, the new mean will be calculated as,
Since,
Thus, new mean of the deepest points of Great lakes is
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