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Use the probability distribution to complete parts (a) and (b) below. The number of school-related extracurricular activities pr student . Activities 0 1 2 '

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Use the probability distribution to complete parts (a) and (b) below. The number of school-related extracurricular activities pr student . Activities 0 1 2 ' 3 4 5 6 ' 7 121 Probability 0.061 0.122 0.162 0.177 0.216 0.127 0.083 0.052 ' t J! The variance is D. (Round to one decimal place as needed.) The standard deviation is E]. i ? (Round to one decimal place as needed.)

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