PLEASE HELP ASAP THIS IS DUE SOON
2 answers:
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If a quadratic equation has solutions and
, then we can write it as
So, in your case, we have (let me write 1.5 as 3/2 and -0.25 as -1/4)
If we don't want decimal coefficient, we can multiply the whole expression by 8:
Answer:
Using the pmf we can find the individual probabilities like this:
And replacing we got:
Step-by-step explanation:
Previous concepts
Let X the random variable that represent the number of people that will become sereiosly ill in two years. We know that
The probability mass function for the random variable is given by:
And f(x)=0 for other case.
For this case the value for would be:
For this distribution the expected value is the same parameter
On this case we are interested on the probability of having at least two chocolate chips, and using the complement rule we have this:
Using the pmf we can find the individual probabilities like this:
And replacing we got: