A local bottling company has determined the number of machine breakdowns per month and their respective probabilities as shown below.[you may need to manually type this data in excel instead of copying and pasting it] Number of Breakdowns Probability 0  0.12 1 0.38 2 0.25 3 0.18 4 0.07   1.  The probability of no breakdowns in a month is _________ 2.  What is the variance of this data? ______________

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