Answer:
Mean, μ = 200
Standard deviation, σ = 10
Step-by-step explanation:
Data provided:
a) true percentage of graduates who stay at their first job less than two years
p = 50% = 0.5
q = 1 - p = 1 - 0.5 = 0.5
Number of graduates selected in a group, n = 400
Now,
The mean is calculated as:
Mean, μ = p × n
or
μ = 0.5 × 400 = 200
and,
standard deviation, σ = 
or
σ = 
or
σ = √100
or
σ = 10
This triangle is separated into two right triangles
if AB=BD(given) so the hypotenuses are congruent
one of the sides is same between the right triangles (BC)
so according to HL theorem, if the hypotenuses and one of the sides (except hypotenuse) between two or more right triangles are congruent to each other
the triangles are congruent
hope you understand it
good luck
you would multiply 30 and 100 to get 3000 and then divide by 20 to get an answer of 150%.
Answer:
this is the correct answer happy
