19題 題干里的存款怎么判斷是年末存還是年初存？
想問一下數(shù)量百題的61題。為什么題目里說的p(1
有沒有志玲姐解答一下，關于求FV of growing ordinary annuity的問題：Blake is 30 years old today, and he is planning on his retirement at age 65. His currently salary is $45000 and he expects his salary to increase at a rate of 5% per year as long as he works. To save for the retirement, he plans on making annual contributions to a retirement account. His first contribution will be made on his 31st birthday and will be 8% of this year’s salary. Likewise, he expects to deposit 8% of his salary each year until he reaches age 65. Assume that the rate of interest is 7%. The future value at retirement (age 65) of his saving is closest to: a. $497,530 b.$928,902 c.$87,004 d.$1,263,236 應該用公式FV=CF1*{[(1+r)^n-(1+g)^n]/(r-g)}求么（結(jié)果為A）， 還是應該單獨計算每年的ordinary annuity后求FV（結(jié)果為B）?
老師，這個題講的是什么意思？沒看明白。
單個和兩個的均值和方差假設檢驗的公式要記嗎？
4. 這道跟書本例題好像在考慮probability 計多了一次
老師，我想問為什么可以用multiple R代表y和y的預測值之間的關系？
老師，我想問ANOVA里面，SST=SSE+RSS理論上說得通，但實際在數(shù)學公式上是不相等的吧，因為中間都被平方和了。
這題pv為什么是0呀？
79c
14.15題
17
眾數(shù)沒有提到課后題中的眾數(shù)區(qū)間
23題，題干畫黃色的地方怎么理解。是說PMT一次性在第18年付完？那為什么答案里N要取17呢？
第五題
程寶問答
金程問答