1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
alexgriva [62]
3 years ago
14

A certain rare form of cancer occurs in 37 children in a​ million, so its probability is 0.000037. In the city of Normalville th

ere are​ 74,090 children. A Poisson distribution will be used to approximate the probability that the number of cases of the disease in Normalville children is more than 2. Find the mean of the appropriate Poisson distribution​ (the mean number of cases in groups of​ 74,090 children).
Mathematics
1 answer:
sladkih [1.3K]3 years ago
5 0

Answer:

Mean = 2.7

In a group of 74090 we would expect about 3 (rounding to nearest whole number) children with the rare form of cancer.

Step-by-step explanation:

We are given that the rate of cancer in children is 37 children in 1 million. So the probability of cancer in a child is P(C) = 0.000037

Poisson distribution is used to approximate the number of cases of diseases and we have to find what will be the mean number of cases for 74,090.

In simple words we have to find the expected number of children with cancer in a group of 74,090 children.

The mean value of expected value can be obtained by multiplying the probability with the sample size. So, in this case multiplying probability of child having a cancer with total group size will give us the expected or mean number of children in the group with cancer.

Mean = E(x) = P(C) * Group size

Mean = 0.000037 x 74090

Mean = 2.7

This means in a group of 74090 we would expect about 3 (rounding to nearest whole number) children with the rare form of cancer.

You might be interested in
What is the produce? -9x(5-2x)
Marta_Voda [28]

Answer:

279x

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Which choice is equivalent to the quotient shown here for acceptable
Gennadij [26K]
The answer to this question is A
7 0
3 years ago
I don't know how to do this. Can someone explain how to please?​
Natalija [7]

Answer:

f(5) = -2

Step-by-step explanation:

You look on the x-axis for 5 because f(5) means let x = 5. Then go down to the graph (the red zig-zaggy line) At the red line (you're still directly under the 5) look over to the y-axis to find the value. That's your answer. It is -2. The point (5, -2) is on the red graph.

f(5) = -2

3 0
2 years ago
Graph the linear equation. Find the three points that solve the equation then plot on the graph. -y=-x+1
Vinil7 [7]

Answer:

Step-by-step explanation:

The first step will be to make y the subject of the formula, by multiplying both sides of the equation by -1.

y = x - 1

This is simply the equation of a line with a slope of 1 and y-intercept (0,-1)

To determine the three points that solve the equation, we can let x be;

0, 1, 2

When x =0, y = 0-1 = -1

When x = 1, y = 1-1 = 0

When x = 2, y = 2 - 1 = 1

Therefore, we have the following three sets of points that can be used to graph the given linear equation;

(0, -1)

(1, 0)

(2, 1)

Find the attached for the graph

3 0
3 years ago
Explain solving Slope
xeze [42]

ratio of vertical change between 2 points

5 0
3 years ago
Other questions:
  • t Store 1 I can buy 36 oz of baby formula for $26.62, and at Store 2 I can buy 28 oz of baby formula for $22.42. Which one is a
    14·1 answer
  • Candy buys 20 ounces of mixed nuts she puts the equal number of ounces in each of three bags how many ounces of mixed nuts will
    14·2 answers
  • Unit rate for $56/25 gal
    13·1 answer
  • Can someone help me.​
    7·1 answer
  • Given f(x)= 3x^2-5x+2 and g(x)= 4x- 6, find f(x)+g(x).
    15·1 answer
  • The sum of 4 consecutive integers is 198
    11·1 answer
  • the measure of an angle is (5 x + 10) and the measure of another angle is 55 both angles have a sum of 90 what is the value of x
    15·1 answer
  • A cognitive psychologist studying reading comprehension wanted to know what would happen if all college students were taught bet
    14·1 answer
  • What is the value of 135,620 written in scientific notation ​
    9·1 answer
  • Which of the following notes is G?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!