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Mathematics, 13.04.2021 01:50 knussoshd8329

A market research firm reported the mean annual earnings of all family practitioners in the United States was . A random sample of family practitioners in Los Angeles had mean earnings of with a standard deviation of . Do the data provide sufficient evidence to conclude that the mean salary for family practitioners in Los Angeles is greater than the national average? Use the level of significance and the -value method with the - calculator.

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