## (Solution Download) The petal width mm of one kind of iris has

The petal width (mm) of one kind of iris has a normal distribution. Suppose that, from a random sample of widths, the t based 90% confidence interval for the population mean width is (16.8, 19.6) mm. Answer each question "yes," "no," or "can't tell," and justify your answer. On the basis of the same sample:
(a) Would H0: ? = 20 be rejected in favor of H1: ? ? 20 at ? = .10?
(b) Would H0: ? = 18 be rejected in favor of H1: ? ? 18 at ? = .10?
(c) Would H0: ? = 17 be rejected in favor of H1: ? ? 17 at ? = .05?
(d) Would H0: ? = 22 be rejected in favor of H1: ? ? 22 at ? = .01?

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