A survey claims that 9 out of 10 doctors recommend aspirin for their
patients with headaches. To test this claim against the alternative
that the actual proportion of doctors who recommend aspirin is less
than 0.90, a random sample of 100 doctors results in 83 who indicate
that they recommend aspirin. The value of the test statistic in this
problem is approximately equal to ( )
选项:
A:-4.12
B:-2.33
C:-1.86
D:-0.07
发布时间:2024-03-30 12:33:42