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1. What test statistic is used when the variance is known? a. z-test c. z-test for proportion b. t- test d. chl-square 2. What test statistic is used when the variance is unknown? a. z-lest G. z-test for proportion b. to test d. chi-square 3-6. The breeder of rabbits claims that he can breed rabbits yielding a mean weight of greater than 1842 grams. Suppose the standard deviation & is known to be 185 grams, A random sample of twenty five rabbits had a mean weight of 1900 grams. At a= 0.05 level of significance, is the breeders claim justified? 3. What is the null and alternative of the situation? a Ho: = 1842 Ha: # 1842 c. Ho: =1900 Ha; His1678 b. Ho: (=1842 Ha: p> 1842 d. Ho: =1900 Ha:u#1678 4. What is the test statistics should used in the situation? c. z-test for proportion 10 a. z-test b. I- test d. chi-square O 5. What is the computed test value? Show your solution. ( 3 points) a.1.65 C.1.57 b.-1.65 d.-1.57 6. What is the decision for the situation? a. Accept Ho and Accept Ha c. Accept Ho and Reject Ha b. Reject Ho and Accept Ha d. Reject Ho and Reject Ha7-Physician claims that joggers' maximal volume oxygen uptake is greater than the average of all adults. A sample of 15 joggers has a mean of 40.6 millilitres per kilogram (ml/kg) and a standard deviation of 6 ml/kg. If the average of all adults is 36.7 mi/kg, is there enough evidence to support the physician's claim at a=0.05? 7. What is the population mean of the situation? a. 15 joggers c.6ml/kg b.40.6ml/kg d.36.7ml/kg 8. What is the null and alternative hypothesis a. Ho: J= 40.6 Ha: > 40.6 c. Ho: [=36.7 Ha: (>36.7 b. Ho: [=40.6 Ha H