a recent report indicated that 22 percent of the households in a certain community speak a language other than english at home. a reporter will randomly select a household from the community until the first household that speaks a language other than english at home is selected. let random variable q represent the number of attempts needed until the first household that speaks a language other than english at home is selected. the random variable q has a geometric distribution with p=0.22. which of the following is closest to the variance of the random variable?

like many students at university, you may be unhappy about the results you attain in exams. you may feel that even with all you are doing there must be something more -- or different-- you could be doing to get better grades. we have all at some time or other heard of that student who only studies a couple of hours for final exams and scores a's every time. we stand in awe of those who seem to breeze through without undue effort and seem to need very little in the way of studying to nail an exam. the reasons for success, in what i think are the vast majority of cases, are less esoteric than many students think: successful students consistently apply a series of productive strategies with view to attaining clearly identified learning and grade goals throughout the academic term.