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
otez555 [7]
2 years ago
15

A sample of 1500 people from a certain industrial community showed that 800 people suffered from a lung disease. A sample of 100

0 people from a rural community showed that 300 suffered from the same lung disease. Assume these two proportions give good estimates of population proportions, respectively. Find the probability that the difference of the proportions (industrial - rural) is greater than 0.2 if two samples of size 150 and 100 are drawn from the two populations, respectively.
Mathematics
1 answer:
ss7ja [257]2 years ago
3 0

Answer:

The probability that the difference of the proportions (industrial - rural) is greater than 0.2 is 0.7054

Step-by-step explanation:

Solution

Given that:

n₁ = 1500

x₁ = 800

p₁ =800/1500 =0.533

q₁ = 1- 0.533 = 0.467

Thus,

n₂ =1000

x₂ = 300

p₂ = 300/1000 = 0.3

q₂ = 1-0.3 =0.7

So,

p₁ - p₂ = 0.533 - 0.3

=0.233

Now,

SE (p₁ - p₂ ) =√0.533 * 0467/150 + 0.3 * 0.7/1000

=0.0613

So,

p ( p₁ - p₂  > 0.2

= p ( Ƶ > 0.2 - 0.233/0.0613

p = ( Ƶ > - 0.54)

= 0.7054

You might be interested in
ANSWER ASAP PLSSS
Andrei [34K]

vbbbbbbbbbbbbbbbbbdnnnnnAnswer:

Step-by-step explanation:

8 0
3 years ago
Please please help me it's for my homework ​
serg [7]

Answer:

6/25

Step-by-step explanation:

.24 = 24/100 = 6/25

3 0
3 years ago
Read 2 more answers
Is 3(x+2)-10=5x-6 one souliton
gulaghasi [49]

Answer:

one solution it is x=1

Step-by-step explanation:

i can type in the steps if you want

3 0
2 years ago
Read 2 more answers
Please help with steps, will give brainliest. Simplify
kumpel [21]

Answer:

=53*(54 ×^9 y^12 z^15)^1/2

=53*y^6 *z^(15/2) * x^( 9/2)* (54)^1/2

4 0
2 years ago
The ball game took in $1,666 one Saturday. The number of $12 adult tickets was 18 more than twice the number of $5 child tickets
Anni [7]
An item is regularly priced at $30. It is on sale for 20% off the regular price. How much in dollars) is discounted from the regular price?

4 0
2 years ago
Other questions:
  • Suppose that the probability of getting a job offer (from a specific company) is 0.17. Suppose that we observe empirically that
    13·1 answer
  • 24 people where using gym. the ratio of men to women is 2:1. what is the ratio of men
    15·1 answer
  • What is 2.11 in a mixed number simplified
    15·2 answers
  • a salesperson receives 2/5% commisson on sales. What commisson does the sales person receive for 8000
    5·1 answer
  • A Statistics exam is created by choosing for each question on the exam one possible version at random from a bank of possible ve
    9·1 answer
  • Use the distributive property to create an equivalent expression to 9x+21
    10·1 answer
  • Can someone please help me with this math problem. ​
    8·2 answers
  • You are most likely to encounter an irrational numbers when you’re
    7·1 answer
  • Please help answer these, thank you
    10·1 answer
  • Work out the answers to the following:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!