Mathematics, 30.04.2021 17:20 mrsjenrucker
Is there a doctor in the house? 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 differs from the national average? Use the level of significance and the -value method with the - Plus calculator.
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