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- Canadian Blood Services is a not-for-profit organization that collects nearly one million units of blood per year. About 6% of people have O-negative blood. They are called universal donors because O-negative blood can be given to anyone, regardless of the recipient’s blood type. Suppose that 27 blood donors arrive at one of this organization’s donation centers.The television show CSI: Shoboygan has been successful for many years. That show recently had a share of 19, which means, that among the TV sets in use, 19% were tuned to CSI: Shoboygan. An advertiser wants to verify that 19% share value by conducting its own survey, and a pilot survey begins with 12 households have TV sets in use at the time of a CSI: Shoboygan broadcast.According to the Department of Motor Vehicles (DMV), the entity in charge ofprovidingdrivinglicensesintheUnitedStates,itisillegaltodrivewithabloodalcoholcontentof0.08%ormoreif you are 21 or older. In the DMV’s guidelines to determine when a person is driving under the influence, itisindicatedthatfewer than five percent of the population weighing 100 pounds will exceed the 0.33 alcohol level. Assume this is accurate. If the Highway Patrol stops in a random day 200 unrelated cars where the individual weighs one hundred pounds, on a Friday night, what is the probability that six percent of more individuals stopped exceeds that 0.33 alcohol level?
- A machine produces parts that are either good (80%), slightly defective (10%), or obviously defective (10%). Produced parts get passed through an automatic inspection machine, which is able to detect any part that is obviously defective and discard it. What is the quality of the parts that make it through the inspection machine and get shipped?2a please show all work and clear handwritinThe management of Mark's Department Store estimates that approximately 2% of all shoppers enter the store with the intention of shoplifting. Of those people who engage in the act of shoplifting, 94% are apprehended by security guards using closed-circuit television (CCTV) and an electronic article surveillance system. The latter, also called a tag-and-alarm system, involves the use of a tag or label that is attached to an item. The tag is deactivated or detached at the time of purchase of the item; failure to do so will trigger an alarm when the item is carried through the gates. Of the other 98% of the shoppers, 1% are mistakenly identified as shoplifters by security guards watching them on CCTV or have triggered the alarm because the salesperson failed to deactivate or detach the tag. If a shopper is detained by security, what is the probability that the person was in fact a shoplifter? (Round your answer to two decimal places.)
- Recently the U.S. Department of Education released a report on online learning stating that blended instruction, a combination of conventional face-to-face and online instruction, appears more effective in terms of student performance than conventional teaching. You decide to poll the incoming students at your institution to see if they prefer courses that blend face-to-face instruction with online components. In an SRS of 300 incoming students, you find that 211 prefer this type of course. Using the 68–95–99.7 rule, if you had drawn an SRS from the United States, you would expect p̂ to fall between what two percents about 95% of the time? (Round your answers to two decimal places.)There are 5 pocket holes at the periphery of a round horizontal platform. In how many ways can 5 balls of different colors be placed with one ball in each pocket. Ans: 24Facebook Facebook reports that 70% of its users arefrom outside the United States and that 50% of its userslog on to Facebook every day. Suppose that 20% of its users are U.S. users who log on every day. Make a prob-ability table.
- he Higher Education Research Institute at UCLA collected data from 203,967 incoming first-time, full-time freshmen from 270 four-year colleges and universities in the U.S. 71.4% of those students replied that, yes, they believe that same-sex couples should have the right to legal marital status. Suppose that you randomly pick eight first-time, full-time freshmen from the survey. You are interested in the number that believes that same-sex couples should have the right to legal marital status. Construct the probability distribution function (PDF). (Round your probabilities to five decimal places.)xP(x)0 1 2 3 4 5 6 7 8The National Association of Realtors estimates that 23% of all homes purchased in 2004 were considered investment properties. If a sample of 800 homes sold in 2004 is obtained and it was noted that 248 homes were to be used as investment property, would this be unusual? Answer either "yes" or "no" and provide the justification for your answer.The Higher Education Research Institute at UCLA collected data from 203,967 incoming first-time, full-time freshmen from 270 four-year colleges and universities in the U.S. 71.8% of those students replied that, yes, they believe that same-sex couples should have the right to legal marital status. Suppose that you randomly pick 8 first-time full-time freshmen from the study from the survey. You are interested in the number that believes that same-sex couples should have the right to legal marital status. Give the distribution of X. (Enter an exact number as an integer, fraction, or decimal.) X~ (______,________) ? X~ = A) B B) H C) P D) G