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Statistics Homework Solutions 16

Statistics Homework Solutions 16 - 16 CHAPTER 2 ย ย 368 268...

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Unformatted text preview: 16 CHAPTER 2 ยก ยก 368 268 368 2 6123 ยจ ยก 268 1012 2 8211 ยจ (b) 368 1012 9. (a) 368 ยก P BB P WW 8 14 4 6 6 14 2 6 ยฅ ยฃ ยฆยฅ ยค ยฃยค ยค ยขยฅ ยขยฅ ยค ยฃยค ยฃ ยฆยฅ ยค 0 5238 ยจ ยก ยก ยฅ ยค ยก 44 84 ยฅ P match ยก ยฃ ยก Section 2.3 1. (a) 2 10 ยฃ (b) Given that the ๏ฌrst fuse is 10 amps, there are 9 fuses remaining of which 2 are 15 amps. Therefore P 2nd is 15 amps 1st is 10 amps 2 9. ยฃ ยกยฅ ยค (c) Given that the ๏ฌrst fuse is 15 amps, there are 9 fuses remaining of which 1 is 15 amps. P 2nd is 15 amps 1st is 15 amps 1 9. ยกยฅ ยค Given that a student is an engineering major, it is almost certain that the student took a calculus course. Therefore P B A is close to 1. Given that a student took a calculus course, it is much less certain that the student is an engineering major, since many non-engineering majors take calculus. Therefore P A B is much less than 1, so P B A P AB . ยฅ ยค ยฅ ยกยฅ 0 2 0 09 0 018 ยจ ยจ ยค ยฆยฅ ยจ ยค ยกยฅ ยค ยก ยขยฅ ยค PAPB ยฅ ยค ยค ยค ยกยฅ 5. (a) P A B ยฅ 3. Therefore ยฃ ยก ยค 11. 0 9260 ยจ (c) ...
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