Question

Doctors nationally believe that 72% of a certain type of operation are successful. In a certain...

Doctors nationally believe that 72% of a certain type of operation are successful. In a certain
hospital, 53 of these operations were observed, and 63% of them were successful. Is this hospital's
success rate different from the national average?
a. State the null and alternative hypotheses
b. What is the test statistic?
c. Using a .01 significance level, what is the decision rule?
d. Show the test statistic and essential calculations.
e. What do you conclude? State you findings in a sentence.

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