Answer:
since X would be equal to 9, x + 2 would be equal to 11
Answer:
A Poisson distribution, with λ=5.3
Step-by-step explanation:
For this type of random variables, a Poisson distribution is the most adecuate.
If the number of occurrences in ten minutes is 5.3, we can define the parameter λ=5.3 and the probability function as:
F(t) can be factored to find the zeros.
.. f(t) = -5(t -5)(t +2) . . . . f(t) = 0 for t=-2, t=5
The object hits the ground after 5 seconds.
Answer:
Step-by-step explanation:
85+x+x=89
85+2x=89
2x=89-85
2x=4
x=2
So she would need 89+2=91