Find n so that mean of the data set is 140. (120, 145, 130, 80, 95, 100, 340, n)
2 answers:
Answer:
<u>Answer</u><u>:</u><u> </u><u>n</u><u> </u><u>is</u><u> </u><u>1</u><u>1</u><u>0</u>
Step-by-step explanation:
Formular:

therefore:

Answer:
we know that mean of the data set is
Sum of all terms / total no. of terms
mean = 120+145+130+80+95+100+340+n / 8
140 = 1010+n / 8
140*8 = 1010 + n
1120 = 1010 + n
1120 - 1010 = n
110 = n
therefore the value of n should be 110
hope it's helpful
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