Nineteen immigrants to the U.S were asked how many years, to the nearest year, they have lived in the U.S. The data are as follows: 2; 5; 7; 2; 2; 10; 20; 15; 0; 7; 0; 20; 5; 12; 15; 12; 4; 5; 10.

a. Fix the errors in Table 1.15. Also, explain how someone might have arrived at the incorrect number(s).

b. Explain what is wrong with this statement: “47 percent of the people surveyed have lived in the U.S. for 5 years.”

c. Fix the statement in b to make it correct.

d. What fraction of the people surveyed have lived in the U.S. five or seven years?

e. What fraction of the people surveyed have lived in the U.S. at most 12 years?

f. What fraction of the people surveyed have lived in the U.S. fewer than 12 years?
g. What fraction of the people surveyed have lived in the U.S. from five to 20 years, inclusive?

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Data Frequency Relative Frequency Cumulative Relative Frequency 2 0 2 19 3 2 3 19 4 1 5 3 7 2 10 2 112 12 2 15 1 20 1 0.1053 0.2632 19 19 12 32 22 22 22 - 0.3158 0.4737 0.5789 19 19 0.6842 0.7895 19 0.8421 1 19 1 19 1.0000 Table 1.15 Frequency of Immigrant Survey Responses