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1.Since
this is a 1-sided hypothesis test with type I error rate of 0.05, the
critical value from table 1c in the appendix in your textbook is <=
-1.645.
2.The
calculation of the test statistic,
z,
results in a value of -10.93.
3.Since
z
= -10.93 is less than the critical value of -1.645, we reject the null
hypothesis.
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