Answer:
Hence the correct option is option b) Yes, the upper level of one standard deviation is 72.
A score of 74 is not within one standard deviation of the mean.
Step-by-step explanation:
Here the given details are,
Mean = 68
SD = 4
Distribution is normal.
Z-score for x = 74 is given as below:
So, the score of 74 is 1.5 standard deviations from the mean.
Therefore the score is not lies between 64 and 72.
Yes, the upper level of one standard deviation is 72.
Answer:
line l║line m
Step-by-step explanation:
See the diagram first.
Statement:
1. ∠ 2 and ∠ 5 are supplementary
Reason:
It is given
Statement:
2. ∠ 3 = ∠ 2
Reason:
They are opposite angles.
Statement:
3. ∠ 3 and ∠ 5 are supplementary
Reason:
As ∠ 3 = ∠ 2
Statement:
4. line l is parallel to line m
Reason:
Consecutive interior angles ∠ 3 and ∠ 5 are supplementary. (Answer)
Answer:
∠ YVZ = 56°
Step-by-step explanation:
∠ WVZ = 90° ( given ), thus
∠ WVY + ∠ YVZ = 90, substitute values
2x + 3x + 5 = 90
5x + 5 = 90 ( subtract 5 from both sides )
5x = 85 ( divide both sides by 5 )
x = 17
Thus
∠ YVZ = 3x + 5 = 3(17) + 5 = 51 + 5 = 56°
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