finite Math 200 Question Help

7. [11 Points] DETAILS TAN FIN12 8.4.033. MY NOTES PRACTICE ANOTHER A biology quiz consists of eight multiple-choice questions. Five must be answered correctly to receive a passing grade. If each question has four possible answers. of which only one is correct. what is the probabilitythat a student who guesses at random on each question will pass the examination? (Round your answer to four decimal places.) : Need Help? 8. [-11 Points] DETAILS TAN FIN12 8.4.502.XP. Y NOTES PRACTICE ANOTHER A study conducted in a certain year determined that 38% of the population has normal blood pressure (with medication). What is the probability that at most 3 out of 10 people chosen at random have normal blood pressure (with medication)? {Round your answer to three decimal places.) Need Help? '\" 9. [11 Points] DETAILS TAN FIN12 8.4.503.XP. MY NOTES PRACTICE ANOTHER In a survey of 1000 social-media account holders aged 18 years and older conducted by a certain organization, it was found that F696 ofthem have one or two such accounts. It 10 of the participants in the survey are picked at random, what is the probabil'rty that at most ir' ofthem have one or two socialemedia accounts? (Round your answer to four decimal places.) Need Help? 10. [-13 Points] DETAILS TAN F|N12 3.4.046. Y NOTES PRACTICE ANOTHER The probability that an airplane engine will fail in a transcontinental ight is 0.004. Assuming that engine failures are independent of each other, what is the probability that on a certain transcontinental ight, a ve-engine plane will experience: (a) Exactly one engine failure? (Round your answer to ve decimal places.) E (b) Exactly two engine failures? (Round your answer to six decimal places.) E (c) More than two engine failures? (Note: In this event, the airplane will crash. Round your answer to nine decimal places.) Z Need Help? 11. [I2 Points] DETAILS TANFIN12 8.4.051. Y NOTES PRACTICE ANOTHER The manager of Toy World has decided to accept a shipment of electronic games if none of a random sample 01'20 is found to be defective. (Round your answers to three decimal places.) (a) What is the probability that he will accept the shipment if 1 2% of the electronic games is detective?I : (b) What is the probability that he will accept the shipment if 4% of the electronic games is defective? : Need Help