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Can someone help me with this question please.....
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1 vote
Can someone help me with this question please.....

Can someone help me with this question please.....-example-1
User Dmitriy Popov
by
4.7k points

1 Answer

1 vote

Answer:

y = 541

Explanation:

The mean is calculated as

mean =
(sum)/(count)

Mean of set A =
(281+268+225+290)/(4) =
(1064)/(4) = 266

ratio between means = 7 : 12, then

mean of set B =
(12)/(7) × 266 = 456 , thus


(392+512+413+422+y)/(5) = 456 ( multiply both sides by 5 )

1739 + y = 2280 ( subtract 1739 from both sides )

y = 541

User Faizan
by
4.3k points
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