Answer:
X₀ = 71.65
Step-by-step explanation:
given,
mean (μ ) = 64
standard deviation (σ) = 9
σ² = 81
selected candidate are top 20 % candidate
P( X > X₀) = 0.2
P( Z > Z₀) = 0.2
X₀ = 71.65
Hence, the cut off score is equal to X₀ = 71.65
When writing the range or domain of a function, how do i know when to use () or []?
1 answer:
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Answer:
All the graph in attachment ate possible solutions.
Step-by-step explanation:
The graph that has zeros at -3 and 4, will intersect the x-axis at x=-3 and x=4.
The function could be a parabola that opens up or down and intersects the x-axis at x=-3 and x=4.
It could also be a fourth degree polynomial.
See attachment
