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What is the probability of drawing an 8 followed by a 2 from 11 numbers?

If the number 8 is PUT BACK INTO the group after the first draw, the probability of drawing an 8 then a 2 from 11 numbers is: 0.8% or eight-tenths of a percent [reason #1]If the number 8 is REMOVED from the group after the first draw, the probability of drawing an 8 then a 2 from 11 numbers is: 0.9% or nine-tenths of a percent [reason #2]Reason # 1 :On the first draw, you have a 1 in 11 chance of drawing the 8 (9%) then on the second draw there is again a 1 in 11 chance of drawing the 2 (9%). So 9% x 9% = 0.8% or 8/10 % (or 0.008)Reason # 2 :On the first draw, you have a 1 in 11 chance of drawing the 8 (9%) then on the second draw you only have a 1 in 10 chance of drawing the 2 (10%). So 9% x 10% = 0.9% or 9/10 % (or 0.009) OR If the first ball is removed, the odds are 55 to 1.


Calculate the mean for 12 10 19 8 2 15 1 20 6 11 3 7?

The mean is the sum of the values divided by the number of values. In this case (12+10+19+8+2+15+1+20+6+11+3+7)/12 = 9.5.


What is the greatest 3 digit number in base twelve?

bbb In numbering systems greater than decimal (base 10), we use the lowercase letters of the alphabet, in order, to delineate values greater than 9 in a single place. Thus an "a" means that there are 10 of that place value, a "b" means 11, etc. This is the equivalent of 11 * (12^2) + 11 * (12^1) + 11 * (12^0) = (11)(144) + (11)(12) + (11) (1) = 1584 + 132 + 11 = 1727 (base 10)


What is the mean variance and standard deviation for the numbers 2 4 8 2 9 1 7 11 4 7 1 10 1 5?

5.142857143 is the mean.12.43956044 is the variance.3.526976104 is the standard deviation.


A coin is tossed 10 times what is the probability of getting all tails?

The answer is 1 in 2^10 or 1 in 1024 or approximately 0.098%. While there is a 50% chance of getting a heads or tails in a FAIR coin toss during each toss, there is a very low likelihood of getting 10 in row as follows: 1/2 * 1/2 * 1/2 * 1/2 * 1/2 * 1/2 * 1/2 * 1/2 * 1/2 * 1/2 = 1 / 1024 = approximately 0.098%.