Answer:
The probability is 0.953
Step-by-step explanation:
We know that the mean is:
The standard deviation is:
The Z-score is:
We seek to find
The Z-score is:
The score of Z =-2 means that 10:00 p.m. is -2 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the condition of 2 deviations from the mean has percentage of 2.35%
and
The score of Z =2 means that 11:00 p.m. is 2 standard deviations from the mean. Then by the rule of the 8 parts of the normal curve, the area that satisfies the condition of 2 deviations from the mean has percentage of 2.35%
Answer:
(10x - 4) + ( -7 + x)
10x-4-7+x=10x-11 is your answer
Because it's perpendicular, you know that they must have the same slope, -3/2. So, just factor that and the point into the slope-point form to get
y = -3/2x