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The F Distribution
The F distribution is the distribution of the ratio of 2 random variables. Both random variables have yet another distribution, called the c2 Distribution. The degrees of freedom of the numerator is n1 and that of the denominator is n2. We will come across this distribution while studying Regression.
Example
Consider the F distribution with degrees of freedom 2 in the numerator and 13 in the denominator. What is the area under the curve, right of 3.81?
From the tables, this area equals 0.05. (Tables are given in the appendix.)
The positive value of k for which x 2 +Kx +64 = 0 & x 2 - 8x + k = 0 will have real roots . Ans: x 2 + K x + 64 = 0 ⇒ b 2 -4ac > 0 K 2 - 256 > 0 K
Carmen bought 3 pounds of bananas for $1.08. June paid for her purchase of bananas. If they paid the same price per pound, how many pounds did June buy?
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1) Let the Sample Space S = {1, 2, 3, 4, 5, 6, 7, 8}. Suppose each outcome is equally likely. Compute the probability of event E = "an even number is selected". P(E) = 2) A s
Solve 2 ln (√x) - ln (1 - x ) = 2 . Solution: Firstly get the two logarithms combined in a single logarithm. 2 ln (√x) - ln (x - l) = 2 ln ((√x) 2 ) ln (1 - x ) = 2
number of ways that a mixed doubles tennis game can be arranged from 7 couples if no husband and wife play in the same game is??
solve x+y= 7 and x-y =21
xdy/dx=dy/dx y
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