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Standardizing a Random Variable
If X is a random variable with E(X) = m and V(X) = s2, then Y = (X – m)/ s is a random variable with mean 0 and standard deviation 1.
The standardization (or normalization) of X results in Y.
a data set has a mean of 3, a median of4, and a mode of 5, which number must be in the data set 3,4,or5
Water in a canal 30 dm wide and 12 dm deep is flowing with a velocity of 10 km/h. How much area will it irrigate in 30 minutes if 8 cm of standing water is required for irrigation?
Example Reduce 24/36 to its lowest terms. 24/36=12/18=6/9=2/3. In the first step we divide the numerator and the denominator by 2. The fraction gets reduced
Consider the following multiplication in decimal notations: (999).(abc)=def132 ,determine the digits a,b,c,d,e,f. solution) a=8 b=6 c=8 d=8 e=6 f=7 In other words, 999 * 877 = 8
8+2=
sarah has 12 gel pen. she gave 3/4. how many she have
5 hockey pucks and three hockey sticks cost $23. 5 hockey pucks and 1 hockey stick cost $20. How much does 1 hockey puck cost?
vwertical and horizontal
write 107 in expanded form.
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