A Revenue Department Is Under Orders to Reduce the Time $H _ { 0 } : \mu = 6.3$

A revenue department is under orders to reduce the time small business owners spend filling out pension form ABC-5500. Previously the average time spent on the form was 6.3 hours. In order to
Test whether the time to fill out the form has been reduced, a sample of 48 small business owners
Who annually complete the form was randomly chosen, and their completion times recorded. The
Mean completion time for ABC-5500 form was 5.7 hours with a standard deviation of 1.8 hours. In
Order to test that the time to complete the form has been reduced, state the appropriate null and
Alternative hypotheses.

A) $H _ { 0 } : \mu = 6.3$
$H _ { \mathrm { a } } : \mu \neq 6.3$

B) $\mathrm { H } _ { 0 } : \mu = 6.3$
$H _ { \mathrm { a } } : \mu < 6.3$

C) $H _ { 0 } : \mu = 6.3$
$H _ { \mathrm { a } } : \mu > 6.3$

D) $H _ { 0 } : \mu > 6.3$
$H _ { \mathrm { a } } : \mu < 6.3$