Math, asked by rimshazahid17, 6 months ago

the sample of size 40 and 50 respectively have the same mean 53 but the different standard deviation 19 and 8 respectively. what is the standard deviation of the combined sample of size 90.

Answers

Answered by manucharode0009

1

Answer:

1/2

Step-by-step explanation:

the answer is 4/2=2
answer is 2/2=2

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