Q11 Every chisquare distribution is identified by A Its numb

Q11. Every chi-square distribution is identified by A. Its number of degrees of freedom. B. Its number of parameters. C. Its number of non-parametric characteristics. D. Its number of descriptive statistics parameters. E. Its number of inferential statistics parameters.

Q12. The following are all properties of chi-square curves except A. The total area under a 2-curve equals 1. B. The 2-curve starts at 0 on a horizontal axis and extends indefinitely to the right approaches but never touches the horizontal axis as it does so. C. The 2-curve is the same as the t-curve as the number of degrees of freedom decreases. D. The 2-curve is right skewed E. As the number of degrees of freedom becomes larger, 2-curve looks increasingly like normal curves.

Q13. For a 2-curve with 12 degrees of freedom, find 2(0.05). A. 2(0.05).=25.026 B. 2(0.05).=23.026 C. 2(0.05).=21.026 D. 2(0.05).=23.337 E. 2(0.05).=25.338

Q14. Determine the 2 value having an area of 0.025 to its left for a 2 - curve with df=8. A. 2(0.025,8)left.=2.026 B. 2(0.025,8)left.=1.026 C. 2(0.025,8)left.=2.180 D. 2(0.025,8)left.=2.250 E. 2(0.025,8)left.=2.258

Q15. For a 2 – curve with df=20, determine the two 2 values that divide the area under the curve into a middle 0.95 and two outside 0.025 areas. A. (9.951 and 34.170) B. (5.951 and 34.170) C. (9.951 and 43.170) D. (9.591 and 34.170) E. (5.951 and 43.170)

Solution

In case of multiple questions, only the first 4 will be answered.

11. Every chi-square distribution is identified by :

A. its number of degrees of freedom,

This is because it is uniquely identified by the degrees of freedom and has no other parameters

12. The following are all properties of chi-square curves except

C. The 2-curve is the same as the t-curve as the number of degrees of freedom decreases

All other properties hold true

13. For a 2-curve with 12 degrees of freedom, find 2(0.05)

C. 2(0.05).=21.026

From Tables.

14. Determine the 2 value having an area of 0.025 to its left for a 2 - curve with df=8.

C. 2(0.025,8)left.=2.180

From tables.

15. For a 2 – curve with df=20, determine the two 2 values that divide the area under the curve into a middle 0.95 and two outside 0.025 areas.

D. (9.591 and 34.170)

From Tables.