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 a) α =0.10, b) α = 0.05, and c) α = 0.01 level? Group of answer choices a) no; b) no; c) no a) yes; b) yes; c) no a) no; b) no; c) yes a) yes; b) yes; c) yes

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