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. Two research workers classified some people in income groups on the basis of sampling studies. Their results are as follow: Investigators Income groups Total Poor Middle Rich A 160 30 10 200 B 140 120 40 300 Total 300 150 50 500 Show that the sampling technique of atleast one research worker is defective.

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compute the following by suitable grouping :

(-15)+24+5+(-4)

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use the four -step process to find f `(5) f `(7) f `(8) f(x)=14+x+3

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Find number of selections of three different numbers from set {1, 2, 3, ...., 101} so that they form an A.P.

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if we want to know ans example1ml=?l .so what we will do multiply or divide

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I would like to know how many combinations of 4 there are in numbers 1 to 15?

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In an examination a student who gets 30%passes.for first ,second or third division 60% or more,45%-60% and 30%-60% respectively has to be scored.80% for distinction.from results 10% students fails and 5% gets distinction.calculate the% of students placed in the second division?

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This Companyies only source of debt funding is by use of perpetual note. This note is currently pried at $55. The note pays quarterly interest on a $100 face value. Assume a constant nominal rate of 4% (in practice the rate changes over time). The total number of notes on issue equal 50000.

q1. Calculate the cost of debt for this company. (round to 4 decimal places)

The first part of this question asked for the cost of equity which is 9.69%.

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In a geometric series the second term is 3, the fifth term is 81. Find the third term?

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what is the value of N in the table?

x 0 1 2 3 4

y 0 3 12 27 N

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