Doctors nationally believe that 74% of a certain type of operation are successful. In a particular hospital, 57 of these operations were observed and 47 of them were successful. At = .05, is this hospital's success rate different from the national average?
A) No, because the test value 0.86 is in the noncritical region.
B) Yes, because the test value 0.86 is in the critical region.
C) No, because the test value 1.46 is in the noncritical region.
D) Yes, because the test value 1.46 is in the noncritical region.

Question

Doctors nationally believe that 74% of a certain type of operation are successful. In a particular hospital, 57 of these operations were observed and 47 of them were successful. At  = .05, is this hospital's success rate different from the national average?
A) No, because the test value 0.86 is in the noncritical region. 
B) Yes, because the test value 0.86 is in the critical region. 
C) No, because the test value 1.46 is in the noncritical region. 
D) Yes, because the test value 1.46 is in the noncritical region.

Quizplus · Accepted Answer

The Answer of Doctors nationally believe that 74% of a certain type of operation are successful. In a particular hospital, 57 of these operations were observed and 47 of them were successful. At  = .05, is this hospital's success rate different from the national average?
A) No, because the test value 0.86 is in the noncritical region. 
B) Yes, because the test value 0.86 is in the critical region. 
C) No, because the test value 1.46 is in the noncritical region. 
D) Yes, because the test value 1.46 is in the noncritical region.

Doctors Nationally Believe That 74% of a Certain Type of Operation