英文的统计学问题An official from the securities commission estimates that 75% of all investment bankers have profited from the use of insider information.If 15 investment bankers are selected at random from the commission’s registrya).what

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英文的统计学问题An official from the securities commission estimates that 75% of all investment bankers have profited from the use of insider information.If 15 investment bankers are selected at random from the commission’s registrya).what
英文的统计学问题
An official from the securities commission estimates that 75% of all investment bankers have profited from the use of insider information.If 15 investment bankers are selected at random from the commission’s registry
a).what is the probability that at most 10 but at least 6 have profited from insider information?
b).what is the probability that more than 6 have profited from insider infromation?
c).what is the probability that at most 9 and more than 14 have profited from insider information?
d).what is the expected number of investment bankers who have profited from the use of insider information?

英文的统计学问题An official from the securities commission estimates that 75% of all investment bankers have profited from the use of insider information.If 15 investment bankers are selected at random from the commission’s registrya).what
a.
(0.75^6)*(0.25^9)(15C6)+(0.75^7)*(0.25^8)(15C7)+(0.75^8)*(0.25^7)(15C8)+(0.75^9)*(0.25^6)(15C9)+(0.75^10)*(0.25^5)(15C10)=0.3127
b.
1-(0.75^0)*(0.25^15)(15C0)-(0.75^1)*(0.25^14)(15C1)-(0.75^2)*(0.25^13)(15C2)-(0.75^3)*(0.25^12)(15C3)-(0.75^4)*(0.25^11)(15C4)-(0.75^5)*(0.25^10)(15C5)-(0.75^6)*(0.25^9)(15C6)=0.004193
c.
The question does not make any sense.at most 9 and more than 14?
d.
E(x)=np=15*0.75=11.25
You must be taking AP Stats too...well,if you ever need more help,my email is angela3clark@yahoo.com.=) Good luck.

英语等于0分，不好意思

英文的统计学问题An official from the securities commission estimates that 75% of all investment bankers have profited from the use of insider information.If 15 investment bankers are selected at random from the commission’s registrya).what official dig的意思imagine yourself on an official dig 这句英文是孔子的哪句名言?an official with energy to spare should learn;a scholar with energy to spare should worki as an official. 统计学的基本问题高二人教版下册中an unhappy official 是白居易的哪首诗高二人教版下册中an unhappy official 是白居易的哪首汉语诗? 帮忙看这几句英文的意思,Upon additional review of both your correspondence and transcripts,our evaluators have determined that we will need additional verification directly from your school.An official letter,verifying that the official len command official request block 的近义词或者用英文表示关于统计学那块的基础问题问一道统计学的概率分布图问题（英文）The volume of liquid in an unopened 1-gallon can of paint is an example of ___________ .有四个选项：A.the binomial distributionB.a discrete random variableC.a constantD.a continuous random v official 统计学的, Two copies of an official identification in China是什么东西,指的是身份证吗 With your partner,list the countries that use English as an official language.它的翻译, 英文统计学题统计学参数估计问题问一个GRE 作文的问题,一个高频issue~issue 43 To be an effective leader,a public official must maintain the highest ethical and moral standards. 请问这篇里提到了public official,是不是只能写政治方面的?能不能写经济翻译：In advance of an official announcement in an official guideTranslate.thank you