Question: a set of data whose histogram is bell-shaped yields mean and standing deviation 0f 50 and 4, respectively. Approximately what percentage of observations. a) are

a set of data whose histogram is bell-shaped yields mean and standing deviation 0f 50 and 4, respectively. Approximately what percentage of observations.

a) are between 46 and 54? (carry answer to nearest hundredths)

b) are between 42 and 58? (carry answer to nearest hundredths)

c) are between 38 and 62? (carry answer to nearest hundredths)

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