Question
Solve the quadratic equations and determine the relation
between x and y: Equation 1: 2x² - 10x + 12 = 0 Equation 2: y² - 8y + 15 = 0Solution
From equation 1: 2x² - 10x + 12 = 0 Dividing by 2: x² - 5x + 6 = 0 Factorizing: (x - 3)(x - 2) = 0 So, x = 3 or x = 2. From equation 2: y² - 8y + 15 = 0 Factorizing: (y - 5)(y - 3) = 0 So, y = 5 or y = 3. Comparing x and y: • If x = 3 and y = 5, x < y. • If x = 2 and y = 5, x < y. • If x = 3 and y = 3, x = y. Thus, x ≤ y. Answer: D
For the variables X, Y and Z, rXY = 0.80, rXZ = 0.64, rY Z = 0.79 , then square of multiple correlation coefficient R2 X.Y Z is:
Recession in industry is associated with the:
In a 3 races, 2 genders and 5 in each treatments group for two -way ANOVA, the degree of freedom for source of variation due to interaction, error and ...
Two data sets of sizes 6 and 9 have standard deviation 3 and 4, respectively, and arithmetic means 4 and 4, respectively. The standard deviation of com...
If the first, fifth and ninth decile of frequency distribution xi ∣ fi are 3,10,16, respectively, then Kelly's coefficient of skewness is:
Which of the following is NOT a way of the sampling?
If rp be partial correlation compound on sample rAB.c compound from sample of size n, the test statistic for significance testing is
