The triangle in Quadrant IV is the image of the triangle in Quadrant II after a counterclockwise rotation about the origin. What
is the angle of rotation?
A.) 90
B.) 180
C.) 270
D.) 360
A.) 90
B.) 180
C.) 270
D.) 360
1 answer:
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Answer: 0.0775
Step-by-step explanation:
Given : Mean :
Standard deviation :
Sample size :
Since its normal distribution , then the formula to calculate the z-score is given by :-
For x= 28.2 hours
For x= 30 hours
The P- value =
Hence, the probabiliy that the average time spent stydying for the sampe was between 28.2 and 30 hours = 0.0775