A Company Claims That 9 Out of 10 Doctors (I

Multiple Choice

A company claims that 9 out of 10 doctors (i.e., 90%) recommend its brand of cough syrup to their patients. To test this claim against the alternative that the actual proportion is less than 90%, a random sample of 100 doctors was chosen which resulted in 83 who indicate that they recommend this cough syrup. The test statistic in this problem is approximately:

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