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The following data from a random sample of 5-year-old children in the United States represent the number of cavities in their teeth: 4 0 1 0 3 2 1 0 4 3 2 3 4 2 2 3 2 1 1 2 a

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The following data from a random sample of 5-year-old children in

the United States represent the number of cavities in their teeth: 4 0 1 0 3 2 1 0 4 3 2 3 4 2 2 3 2 1 1 2
a. Find the sample average from this ungrouped data.
b. Arrange the data into a frequency table.
c. Find the sample average from the frequency table.
d. Estimate the mean number of cavities for the population of all 5-year-old children in the United States.