PLS HELP ! The last answer is D- 15 and 20
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Answer:
The weight of the seventh linebacker is = 214 lb.
Step-by-step explanation:
Given:
Mean of 7 linebackers = 236 lb
The weights of first 6 linebackers are:
215 lb, 305 lb, 265 lb, 196 lb, 221 lb and 236 lb
To find the weight of seventh linebacker.
Solution:
Let the weight of the seventh linebacker be =
The mean of 7 line backers will be given as:
⇒
The mean of the 7 linebackers is given = 236 lb
Thus, the equation to find will be :
Simplifying.
Multiplying both sides by 7.
Subtracting both sides by 1438.
∴
Thus, the weight of the seventh linebacker is = 214 lb.