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What is the volume of the sphere shown below with a radius of 3?

Graph y = -|x| + 2. click on the graph until the correct one appears.

He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean  and standard deviation  according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%