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$

178,258

. A random sample of53

family practitioners in Los Angeles had mean earnings of=

x=$191,410

with a standard deviation of

$43,017

. 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=

=0.10

level of significance and theP

-valuemethod with theTI

-84

Plus calculator.