Asked by Thomas Scahill on May 02, 2024
Verified
For a z-statistic of -1.34, one would conclude (for a two-tailed test) the score is ______.
A) significant at the .05 level but not the .01 level
B) significant at both the .05 level and the .01 level
C) not significant
D) not significant at the .05 level but is significant at the .01 level
Z-statistic
A type of standard score that represents the distance in standard deviations a data point is from the mean, used in significance testing.
Two-tailed Test
A statistical test that considers both directions of a possible effect, testing for the possibility of an effect in two opposite directions.
- Interpret the significance of z-statistics in hypothesis testing.
Verified Answer
ZK
Zybrea KnightMay 07, 2024
Final Answer :
C
Explanation :
A z-statistic of -1.34 falls between -1.96 and 1.96 (the critical values for a two-tailed test at the .05 level), meaning that it is not significant at the .05 level. It would also not be significant at the .01 level, as the critical values for a two-tailed test at that level are -2.58 and 2.58. Therefore, the correct answer is C, as the score is not significant.
Learning Objectives
- Interpret the significance of z-statistics in hypothesis testing.