# Question 14 1 pts A survey claims that 9 out of 10 doctors (i.e., 90%) recommend...

###### Question: Question 14 1 pts 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- -2.23. Can we conclude that the null hypothesis should be rejected at the a) a =0.10, b) a = 0.05, and c) a =0.01 level? a) yes: b) yes: clyes a) yes: b) yes:c) no a) no: b) no c) no a) no; b) no; c) yes

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