Author Question: A survey claims that 9 out of 10 doctors (i.e., 90%) recommend brand Z for their patients who have ... (Read 70 times)

mspears3 · **on:** Jan 16, 2020

A survey claims that 9 out of 10 doctors (i.e., 90%) recommend brand Z for their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand Z is less than 90%, a random sample of doctors was taken. Suppose the test statistic is z = -1.95. Can we conclude that H₀ should be rejected at the

and

level?
◦ a) no; b) no; c) no
◦ a) no; b) no; c) yes
◦ a) yes; b) yes; c) yes
◦ a) yes; b) yes; c) no

Ddddd · **Reply #1 on:** Jan 16, 2020

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