A Survey Claims That 9 Out of 10 Doctors (I

Multiple Choice

A survey claims that 9 out of 10 doctors (i.e., 90%) recommend brand Z for their patients who have children. Totest this claim against the alternative that the actual proportion of doctors who recommend brand Z is less than90%, a random sample of 100 doctors results in 83 who indicate that they recommend brand Z. The test statisticin this problem is approximately (round to the nearest hundredth) :

A) -2.33
B) 2.33
C) -1.83
D) -1.99