|4) Choose the correct statements (You may select more than one answer. Click the box with a check mark for the correct answer and click to empty the box for the wrong answer.)|
|[removed]||A random variable is a quantitative outcome of a chance experiment.|
|[removed]||A probability distribution includes the likelihood of each possible outcome.|
|[removed]||A probability distribution is the outcome of an experiment.|
|[removed]||A random variable represents the likelihood of an outcome.|
5) TheDowntown Parking Authority of Tampa, Florida, reportedthefollowinginformationfor a sample of 219 customersonthenumber of hours cars are parked and theamountthey are charged.
Findthe mean and thestandarddeviation of theamountcharged.
6) ThegamecalledLottosponsoredbytheLouisianaLotteryCommissionpaysitslargestprizewhen a contestantmatchesall 6 of the 35 possiblenumbers. Assumethere are 35 ping-pong ballseachwith a single numberbetween 1 and 35. Anynumberappearsonly once, and thewinningballs are selectedwithoutreplacement.
|(a)||Findtheprobability of matching 5 of the 6 winningnumbers.|
|7) Itisestimatedthat .42 percent of thecallerstotheCustomerServicedepartment of Dell Inc. willreceive a busysignal.|
|Whatistheprobabilitythat of today’s 1,100 callers at least 5 received a busysignal? Use thepoissonapproximationtothe binomial. (Round youranswerto 4 decimal places.)|
8) ThepayoutsforthePowerballlottery and theircorrespondingodds and probabilities of occurrence are shownbelow. Theprice of a ticket is $1.00.
|Findthe mean and standarddeviation of thepayout. (Round your mean valueto 5 decimal places and standarddeviationto 3 decimal places. Omitthe “$” sign in your response.)|
|Standard deviation||$ [removed]|