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oksian1 [2.3K]
3 years ago
13

Karen is starting a career as a professional wildlife photographer and plans to photograph Canadian Geese at one of the staging

grounds during their migration in North Eastern Manitoba. She booked a place in a hide at the edge of a lake and plans to photograph the geese as they land on the water. For the price of a room in the Hilton ($200 per day), she gets a spot on a wooden bench shared by other photographers, a muddy floor, a bracket to mount her telephoto lens, a tent to sleep in and delicious meals of freshly caught fish. Last year, during a stay of 3 days in this hide, she got 2 shots worth $5000 each. She regards this as typical for this time of year although good shots happen at random and each day is independent of the others. To establish her reputation Karen only sells $5000 photographs. This year she has booked 4 days in the hide. What is the standard deviation of her revenue from one day? (The answer is $4082, I just don't know how they got the answer)
Mathematics
1 answer:
balandron [24]3 years ago
3 0

Answer:

$5000*0.816 = $4082

Step-by-step explanation:

It's a strange question, but based on the statement and the question it sounds like it's a poisson distribution:

* For 3 days she was able to get 2 good shots (<em>typical of that time of the year</em>)

* Good shots happen randomly

* Each day is independent of another

Let's call 'p' the probability that she makes a good shot per day

Let's call 'n' the number of days Karen is taking shots.

So, if in 3 days he got 2 good shots and that is typical at that time of the year, then the expected value for the number of good shots (X) is:

E(x)=\frac{2}{3}

For a Poisson distribution E (x)=\lambda\\\lambda= np

So:

\lambda =\frac{2}{3}

For a Poisson distribution the standard deviation is:

\sigma = \sqrt{\lambda}\\\sigma = \sqrt{\frac{2}{3}}

\sigma = 0.816 this is the standard deviation for the number of buentas taken.

So the standard deviation for income is the price of each shot per sigma

$5000*0.816 = $4082, which is the desired response.

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The length of an equilateral triangle is increased by 5 cm. The perimeter of the new triangle is 72 cm. What is the side length
Igoryamba

Answer:

19cm

Step-by-step explanation:

An equilateral triangle is a triangle where the length of the 3 sides are the same.

the perimeter is the sum of the 3 sides

for example, if the length of the side of the an equilateral triangle is 5, the perimeter is 5 x 3 = 15

let x = unknown length of side

length after increase = x + 5

(x + 5) x 3 = 72

divide both sides of the equation by 3

x + 5 = 24

subtract 5 from both sides of the equation

x = 24 - 5 = 19cm

6 0
3 years ago
What is the probability that there is at most one purple marble? 0.100 0.301 0.770 0.971
andriy [413]

The probability that there is at most one purple marble is 0.9701.

<h3>What is the probability  about?</h3>

Probability is a term that connote the possibility of an event or something occurring or not.

Note that it is one that is  based on the level of occurrence that can be seen in a random event.

Based on the fact that there is a  bag that has  eight yellow marbles, nine green marbles, three purple marbles, and five red marbles, the  probability that there is at most one purple marble is 0.9701.

Learn more about This probability case from

brainly.com/question/3729438

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3 0
2 years ago
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Katena32 [7]

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Step-by-step explanation:

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2 years ago
A ski-lodge casts a 3-foot long shadow. at the same time, a 3.5 foot ski pole sticking vertically out of the snow casts a 0.5 fo
Alisiya [41]

Answer:

The lodge is 21 feet tall.

Step-by-step explanation:

Ski Lodge:

object/shadow

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Ski Pole:

object/shadow

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2 years ago
SOLVE FOR X, EXPLAIN PLEASE URGENT.
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3x-3=27
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3 years ago
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