没读明白A list of numbers has a mean of 8 and a standard deviation of 2.5.If x is a number in the list that is 2 standard deviation above the mean,what is the value of 单词没问题但题没看懂,

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没读明白A list of numbers has a mean of 8 and a standard deviation of 2.5.If x is a number in the list that is 2 standard deviation above the mean,what is the value of 单词没问题但题没看懂,
没读明白
A list of numbers has a mean of 8 and a standard deviation of 2.5.If x is a number in the list that is 2 standard deviation above the mean,what is the value of 单词没问题但题没看懂,

没读明白A list of numbers has a mean of 8 and a standard deviation of 2.5.If x is a number in the list that is 2 standard deviation above the mean,what is the value of 单词没问题但题没看懂,
平均值=8
方差=2.5
x是平均值+2个方差
x=8+2*2.5=13

没读明白A list of numbers has a mean of 8 and a standard deviation of 2.5.If x is a number in the list that is 2 standard deviation above the mean,what is the value of 单词没问题但题没看懂, 一道GRE数学In a list of numbers,the first number is 3,the second is 4,and each subsequent number is the sum of all the proceeding numbers in the list.If the 20th number in the list is x,what is the 25th number in the list?A 7x B 16x C 32x D 35x E 英语翻译In a list of numbers,the first number is 3.the second is 4.and each subsequent number is the sum of all the proceeding numbers in the list.If the 20th number in the list is x.what is the 25th number in the list? A list of numbers has a mean of 8 and a standard deviation of 2.5.If x is a number in the list that is 2 standard deviations above the mean,what is the value of 信用证46A:packing list in triplicate showing roll number .lot number and quantity of each roll请帮忙翻译一下,谢谢 a list of things是什么意思 the number of,a small number of,a number of. 没读明白use the fact that every real number has a decimal expansion to produce a 1-1 function that maps S into (0,1) the weight of that GRE数学题中boxplots/box-and-whisker the number of times a value appears in the list is called the weight of that value. a number of the number of 1.Give a query for a list of each department(number and name)with their number of employees.这是EMP表的问题,2.give a query for a list of each department(number and name) for all department with no employees. a growing number of a.number.of?用法 a small number of a number of 造句 a number of同义词 After a number of a number of