Answer:
97.7 %
Step-by-step explanation:
TWO standard deviations above the mean
z - score = 2 corresponds to .9772 97.7 %
Answer:
u = ± 4
Step-by-step explanation:
Given
u² = 16 ( take the square root of both sides )
u = ± 
= ± 4
u = - 4, u = 4
I would say that the results of the study are not significant. This is because the difference of those who drink tea and did not drink tea is small and more or less will have the same values at some points of the research. Having a difference of 0.024, cannot really say anything or differentiate the two.
Answer:
<2 = 90
Step-by-step explanation:
If the lines are perpendicular, the angles are 90 degrees
