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KengaRu [80]
3 years ago
5

Given that x has a Poisson distribution with

Mathematics
1 answer:
Alex3 years ago
8 0
The Poisson probability distribution function is
P(x;\mu)= \frac{e^{-\mu}\mu ^{x}}{x!}
where
μ = mean number of successes
x =  actual or expected number of successes

Given:
μ = 13
x = 5

Therefore the probability that x=5 is
P(x = 5) = (e⁻¹³*13⁵)/5!
             = 0.8392/120
             = 0.006994
             = 0.0070  (to 4 dec. places)

Answer: 0.0070  (to 4 decimal places)

It is interesting to observe P(x) as x varies, as in the graph shown below.

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Cherie is jogging around a circular track. She
skelet666 [1.2K]

Answer:

Measure of minor angle JOG is 95.5^{\circ}

Step-by-step explanation:

Consider a circular track of radius 120 yards. Assume that Cherie starts from point J and runs 200 yards up to point G.  

\therefore m JG = 200 yards, JO=120 yards.  

Now the measure of minor arc is same as measure of central angle. Therefore minor angle is the central angle \angle JOG = \theta.

To calculate the central angle, use the arc length formula as follows.  

Arc\:Length\left(s\right) = r\:\theta  

Where \theta is measured in radian.

Substituting the value,

200=120\:\theta  

Dividing both side by 120,

\dfrac{200}{120}=\theta  

Reducing the fraction into lowest form by dividing numerator and denominator by 40.

\therefore \dfrac{5}{3}=\theta  

Therefore value of central angle is \angle JOG = \theta=\left(\dfrac{5}{3}\right)^{c}, since angle is in radian

Now convert radian into degree by using following formula,

1^{c}=\left(\dfrac{180}{\pi}\right)^{\circ}

So multiplying \theta with \left(\dfrac{180}{\pi}\right)^{\circ} to convert it into degree.

\left(\dfrac{5}{3}\right)^{c}=\left(\dfrac{5}{3}\right) \times \left(\dfrac{180}{\pi}\right)^{\circ}

Simplifying,

\therefore \theta = 95.49^{circ}

So to nearest tenth, \angle JOG=95.5^{circ}

8 0
3 years ago
A video game is on sale for 40% off. The sale price is $34.79. Find the original price of the game.
makkiz [27]
6”5 dollars is the answe
5 0
3 years ago
Find magnitude and directionof vector a = ( -3 , -3 )​
nevsk [136]

Answer:

Step-by-step explanation:

Magnitude: |a|= \sqrt{(-3)^{2}+(-3)^{2} }=3\sqrt{2}

Direction: in the negative direction of the Ox axe and Oy axe

3 0
2 years ago
I WILL GIVE BRAINLIEST
MrRissso [65]

5 goes with total numbers in the ride

k goes with number of kilometers he has already biked

5-k goes with numbers of kilometers left

and then proces of elimination leaves you with 4 and the last one

4 0
3 years ago
Read 2 more answers
Solve what is 2-2 plus 2 times 2 divide by 2
poizon [28]

Answer:

2

Step-by-step explanation:

6 0
3 years ago
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