We have to use a z-score percentile table for the standard normal distribution. It shows:
The 20th percentile = - 0.84
The 40th percentile = - 0.25
The 60th percentile = 0.25
The 80th percentile = 0.84
Answer:
Step-by-step explanation:
The given expression is .
We factor the GCF to get:
This can be rewritten as:
We can observe that the quadratic trinomial is a perfect square)
Therefore the completely factored form of the given trinomial is
Answer:
Step-by-step explanation:
Represent Green with G
So,
Required
Determine the probability that 10 out of 16 prefer green
This question is an illustration of binomial distribution and will be solved using the following binomial distribution formula.
In this case:
-- number of people
-- those that prefer green
So, the expression becomes:
Substitute 50% for G (Express as decimal)
Apply law of indices
Solve 16C10
<em>Hence, the required probability is 0.1222</em>