1. Three defective toothbrushes were accidentally shipped to the drugstore by Clean-Brush products, along with 27...

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1. Three defective toothbrushes were accidentally shipped to the drugstore by Clean-Brush products, along with 27 non-defective ones. What is the probability the first two electric toothbrushes sold will not be defective? What is the probability the first two electric toothbrushes sold will be defective? What is the probability of selling 2nd toothbrush defective, knowing the first toothbrush sold was non-defective? 2. A study by San Antonio Visitors Bureau revealed that 60% of vacationers visiting San Antonio visit Sea World, 75% visit the Six Flags, and 48% visit both. What is the probability that a vacationer will visit at least one of the attractions? None of the attractions? Will visit either Sea World or Six Flags but not both? 3. If you ask four strangers about their birthdays, what is the probability: all were born on Wednesdays? None were born on Saturday? All were born on different days of the week? 4. Boeing has pitched its brand new airplane 737Max, to two different countries. Boeing believes there is a 72% chance that it will receive an order from China and a 57% chance it will receive an order from Singapore next month. What is the probability that Boeing will receive an order from both countries? Only from Singapore but not China? At least one country? 1. Three defective toothbrushes were accidentally shipped to the drugstore by Clean-Brush products, along with 27 non-defective ones. What is the probability the first two electric toothbrushes sold will not be defective? What is the probability the first two electric toothbrushes sold will be defective? What is the probability of selling 2nd toothbrush defective, knowing the first toothbrush sold was non-defective? 2. A study by San Antonio Visitors Bureau revealed that 60% of vacationers visiting San Antonio visit Sea World, 75% visit the Six Flags, and 48% visit both. What is the probability that a vacationer will visit at least one of the attractions? None of the attractions? Will visit either Sea World or Six Flags but not both? 3. If you ask four strangers about their birthdays, what is the probability: all were born on Wednesdays? None were born on Saturday? All were born on different days of the week? 4. Boeing has pitched its brand new airplane 737Max, to two different countries. Boeing believes there is a 72% chance that it will receive an order from China and a 57% chance it will receive an order from Singapore next month. What is the probability that Boeing will receive an order from both countries? Only from Singapore but not China? At least one country?