3 years ago

A plane can use its height above the ground and its distance from the destination airport to find the

Mathematics

1 answer:

ludmilkaskok [199]3 years ago

5 0

Answer:90

Step-by-step explanation:

You might be interested in

10.5% of the population is 65 or older. Find the probability that the following number of persons selected at random from 25 peo

julia-pushkina [17]

Given:

The sample size n=25

Probability of population is 65 or older is 10.5%.

This date follows the binomial distribution,

$\begin{gathered} n=25,p=0.105 \\ X\rightarrow B(n=25,p=0.105) \end{gathered}$

To find the probability that at most 2 are 65 or older,

$\begin{gathered} P(X=x)=^nC_x(p)^x(1-p)^{n-x} \\ P(0\leq X\leq2)=P(X=0)+P(X=1)+P(X=2) \\ =^{25}C_0(0.105)^0(1-0.105)^{25-0}+^{25}C_1(0.105)^1(1-0.105)^{25-1}+^{25}C_2(0.105)^2(1-0.105)^{25-2} \\ =0.0625+0.1832+0.2579 \\ =0.5036 \\ \approx0.504 \end{gathered}$

Answer: Probability is 0.504 .

8 0

1 year ago

What is the the value of (-3+3i) + (-2+3i)?

alina1380 [7]

It’s B because -3 -2 is -5 and 3i+3i is 6i

4 0

3 years ago

What number is 1/4 of 20?

Alex73 [517]

5 just do 4 divided by 20

6 0