exam
Maths Puzzle
Numerical Ability
log3(3x+73)=74
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exam Other Question
Dustin has a set of 180 blocks. Each of these blocks is made of either wood or plastic and comes in one of three sizes (small, medium, large), five colors (red, white, blue. yellow
Find the mean and standard deviation of the following discrete random variable.
Number of siblings: X| 1 2 3 4 5
Probability P(X=x): |0.200| 0.425| 0.275|0.075|0.025
1 goes on top 0.200 2 goes on top 0.425 etc.