2 answers:
You might be interested in
Answer:
The proportion of students whose height are lower than Darnell's height is 71.57%
Step-by-step explanation:
The complete question is:
A set of middle school student heights are normally distributed with a mean of 150 centimeters and a standard deviation of 20 centimeters. Darnel is a middle school student with a height of 161.4cm.
What proportion of proportion of students height are lower than Darnell's height.
Answer:
We first calculate the z-score corresponding to Darnell's height using:
We substitute x=161.4 , , and
to get:
From the normal distribution table, we read 0.5 under 7.
The corresponding area is 0.7157
Therefore the proportion of students whose height are lower than Darnell's height is 71.57%
function : y = (-x) - 6
<u>Find x-intercept</u> :
- (-x) - 6 = 0
- (-x) = 6
- x = -6
<u>Find y-intercept</u> :
- y = (-0) - 6
- y = -6
mark these two points on both the axis and draw a straight linear graph.
passes coordinates : (0, -6), (-6, 0)
