Which of the following statements are true about the z-statistic and the X statistic at degrees of freedom 1?

Note:=

Z=x

1. X2= Z
2. X2= Z2
3. If the null hypothesis for Z is rejected at an -level then the null hypothesis for X2may be rejected at the same-level.
4. D. If the null hypothesis for Z is rejected at an -level then the null hypothesis for X will be rejected at the same-level.
5. If the null hypothesis for Z is rejected at an -level then the null hypothesis for X will not be rejected at the same-level.

A and D are true.

B and D are true.

B and C are true.

B and E are true.