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]
3 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]3 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
2 - 5 <br><br><br> put explanation
Aliun [14]

Answer: -3

Step-by-step explanation: well there is a pretty easy explanation for this because what you pretty much do is you put the answer around by doing 5-2 and just put a negative since the smaller number is in the front.

5 0
3 years ago
Read 2 more answers
Find the product mentally. (2j + 7)(2j - 7)
Gwar [14]


4j^2 -14j +14j - 49

4j^2 - 49

7 0
3 years ago
In 2003, the population of an African country was about 13.1 million people, which is 2 million more than 3 times the population
lianna [129]
3p+2.0=31.1
3p=29.1
p=9.7 million people
7 0
3 years ago
How to do this please and what's the answer ​
nalin [4]
This is how you do it! Please let me know if you need help.

5 0
3 years ago
Cassie is a half pound of sugar in her cabinet her cake recipe calls for two tenths of a pound of sugar how many cakes can she m
mamaluj [8]
The information's given in the question should be very minutely checked. Based on those given information's the answer to the question can easily be deduced.
Amount of sugar in the cabinet of Cassie = 1/2 pound
Amount of sugar required by Cassie to make her cake recipe = 2/10 pound
                                                                                                   = 1/5 pounds
Then
The number of cakes that Cassie can make = (1/2)/(1/5)
                                                                        = 5/2
                                                                        = 2 1/2
So from the above deduction we can easily conclude that Cassie can make a total of 2 cakes with the sugar she has and there will still be some sugar left.
7 0
3 years ago
Other questions:
  • I need.help please
    5·2 answers
  • The ordered pair (, 4) is a solution to the equation y=5x-1.
    12·2 answers
  • 1000 + 10000 divided by 100000​
    10·2 answers
  • Find the product and simplify your answer.<br> -3x(6x3 - 5x + 5)
    9·1 answer
  • Larry is using an online calculator to calculate the outputs f(n) for different inputs n. The ordered pairs below show Larry's i
    12·2 answers
  • Pls help me what is the equation for this graph pls get it right :)
    15·2 answers
  • Plsss school is done hurt plsss answer really quick
    9·1 answer
  • PLEASE HELPO MEEEEEEE Choose ALL the real-world scenarios below that would represent the
    10·1 answer
  • 1. What two key
    12·1 answer
  • To make green paint students mixed yellow paint with blue paint the table below shows how many yellow and blue drops from a drop
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!