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answer this 2 questions show complete solution. thanks 1. IF THE MEAN AGE OF 10 SAMPLE CHILDREN IS 10 YEARS OLD WITH A STANDARD DEVIATION

answer this 2 questions show complete solution. thanks

1. IF THE MEAN AGE OF 10 SAMPLE CHILDREN IS 10 YEARS OLD WITH A STANDARD DEVIATION OF 2 YEARS, AND THE CORRESPONDING WEIGHTS HAS A MEAN OF 45 POUNDS WITH A STANDARD DEVIATION OF 5 POUNDS, CALCULATE FOR THE COEFFICIENTS OF VARIATION?

2. IF 2 BALANCED COINS ARE TOSSED, WHAT IS THE PROBABILITY OF GETTING BOTH UPRIGHT?

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