1.Determine two geometric means between -5/2 and 20
2.A high school forming committee of five people,they must select one person from the five officers of the Honor society,one from the four senior class officers,one from the six officers of the PTSA,two from the twenty faculty members .If Mary is the only senior class officer willing to serve on the committee,how many different committee can formed?
MATH HOMEWORK Statistic questions (2 only)?
2010-05-15 2:54 am
回答 (2)
2010-05-15 3:11 am
✔ 最佳答案
Suppose the common ratio is r. The terms are -5/2, -5/2 r, -5/2 r^2, -5/2 r^3 and that one must be 20-5/2 r^3 = 20
r^3 = 20 • (-2/5) = -8
r = ³√-8 = -2
so the means are -5/2 • -2, and -5/2 • 4 or 5, -10
You'd do 5 • 1 • 6 • (20 C 2)
2016-11-29 8:11 pm
ok. advantageous skewness potential the tail to the staggering is elongated...yet you won't be able to truly tell from the information given the courting between recommend and median. The distribution character has an bring about this.
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