4. The amount of garbage that households generate each year is distributed normally (3 marks) around the mean. If the mean amount of garbage that Canadians generate is 720 kg with a standard deviation of 1 10 kg, what percent of Canadian households generate a) more than 720 kg? 4 a b) between 500 and 940 kg? c) how much garbage would a household generate it it was 3 standard deviations b) below the mean (-3s)? C ) 5. Annette and Taranjeet competed in the long jump. Annette's mean score was 5.8m (2 marks) with a standard deviation of 2.0. Taranjeet's mean jump was 6.0 with a standard deviation of 1.8. Who was the more consistent jumper? Explain the reason for your answer. 5 . 6. An instructor gave a final exam. The mean score was 74% and standard (2 marks) deviation was 5.6. Cassandra's score was 89. a) Calculate her z-score. 6 a) b) What is the meaning of your answer? 7. In a lake the trout averaged (mean) 30 cm in length and the standard deviation was (2 marks) 6.2 cm. The bass mean weight was 1.8 kg with a standard deviation of 0.36 kg. If Tina caught a 45 cm trout and Brad caught a 2.7 kg bass, then relatively speaking which was the bigger catch? Use a statistical method to prove your answer. 7 . 8 . A random sample of 110 NIC students revealed that 95% of them would prefer to go to class than watch the news on TV. What is the margin of error in this study? 8. 055 Ch 12 Assignment.docx P. 3