9) The world's smallest mammal is the bumblebee bat (Craseonycteris thonglongyai). Such bats are roughly the size of a l

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9 The World S Smallest Mammal Is The Bumblebee Bat Craseonycteris Thonglongyai Such Bats Are Roughly The Size Of A L 1 (55.66 KiB) Viewed 10 times

9) The world's smallest mammal is the bumblebee bat (Craseonycteris thonglongyai). Such bats are roughly the size of a large bumblebee. Listed are weights (in grams) of a SRS of these bats: 1.7, 1.6, 1.5, 2.0, 2.3, 1.6, 1.6, 1.8, 1.5, 1.7, 2.2, 1.4, 1.6, 1.6, and 1.6. Assume the bats come from a population that is normally distributed. Use a 0.10 significance level to test the claim that these bats come from a population whose standard deviation is at most 0.20 grams. a) Hota ≤ 0.20 Ha:a> 0,20 b) a) 22.307 Ho:a=0.20 Ha: 0 + 0.20 10) See problem 9. State the critical value(s). b) 7.790 11) See problem 9. Calculate the test statistic. a) 18.113 b) 8.364 Ho: <0.20 c) Μαΐc = 0.20 c) 8.547 I c) 4.975 d) Ho: 20.20 Ha: a <0.20 d) 21.064 d) 23.433 12) See problem 9. State the technical conclusion based on the traditional method. a) The test statistic is external to the critical value(s); Reject Ho. b) The test statistic is external to the critical value(s); FTR Ho. c) The test statistic is not external to the critical value(s); Reject Ho. d) The test statistic is not external to the critical value(s); FTR Ho 13) See problem 9. State the non-technical conclusion. a) There is sufficient evidence to warrant rejection of the claim that these bats come from a population whose standard deviation is at most 0.20 grams. b) There is not sufficient evidence to warrant rejection of the claim that these bats come from a population whose standard deviation is at most 0.20 grams. c) The sample data support the claim that these bats come from a population whose standard deviation is at most 0.20 grams. d) There is not sufficient sample evidence to support the claim that these bats come from a population whose standard deviation is at most 0.20 grams.