# 3) 3) A company claims that 9 out of 10 doctors (i.e., 90%) recommend its brand...

###### Question:

3) 3) 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 doctors was taken. Suppose the test statistic is z .-2.23. Can we conclude that Ho should be rejected at the a) a = .10, b) a = .05, and c) a - .01 level? A) a) yes; b) yes; c) no B) a) no; b) no; c) no C) a) no; b) no; c) yes D) a) yes; b) yes; c) yes u rnwers the question.

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