Explaining two tail t-test

Assignment Help Basic Statistics

Reference no: EM1315617

Q1) For which of given variables must a "two tail" t-test be applied?

a) P

b) I

c) PC

d) Must be applied for all.

Q2) For regression equation Q = 100 - 10X1 + 25X2, which of the given statements is true?

a) X2 is the more significant variable as it is positive.

b) When X1 increases by one unit, Q decreases by 10 units.

c) When X1 decreases by one unit, Q decreases by 10 units.

d) When X1 increases by 10 units, Q decreases by 1 unit.

Q3) Which of the given is most probable to point out a statistically significant regression coefficient?

a) t > R2

b) t > 2

c) R2 > .90

d) F > 4

Q4) Which indicator illustrates how well a regression line fits through scatter of data points?

a) F-test

b) R2

c) t-test

d) Durbin-Watson test

Q5) When total revenue reaches its peak (elasticity equals 1), marginal revenue reaches

a) 1.

b) zero.

c) -1.

d) Cannot be determined from the information provided.

Reference no: EM1315617

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