I need step by step help, thank you:)
1 answer:
You might be interested in
Answer:
Option D is correct.
Step-by-step explanation:
We have been given
We need to tell which one of them will give the perfect square trinomial.
Trinomial is the polynomial with three terms.
If we factorize it by middle term splitting we get:
is the perfect square trinomial.
Therefore, option D is correct
Answer:
C. 0.403
Step-by-step explanation:
Binomial distribution has two parameter n and p. Here, n=15 and p=0.60.
We have to find the probability of 10 or more will show that the hamburger, French fries and a drink were ordered. P(X≥10)=?
The binomial probability distribution function for random variable X is
where q=1-p=1-0.6=0.4,n=15 and p=0.6.
P(X≥10)=P(X=10)+P(X=11)+P(X=12)+P(X=13)+P(X=14)+P(X=15)
=0.185938
=0.126776
=0.063388
=0.021942
=0.004702
=0.000470
P(X≥10)= 0.185938 +0.126776 +0.063388 +0.021942 +0.004702 +0.000470
P(X≥10)=0.403216
So, the probability of 10 or more will show that the hamburger, French fries and a drink were ordered is 0.403.