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
Assoli18 [71]
3 years ago
7

The National Health Interview Survey conducted of 33,326 adults by the U.S. National Center for Health Statistics in 2003 indica

ted that 21.4% of adults were current smokers. A similar study conducted in 1991 of 42,000 adults indicated that 25.6% were current smokers. We will use the subscript "1" for the year 1991 and the subscript "2" for the year 2003. (a) Find a point estimate of the difference between the proportion of current smokers in 1991 and the proportion of current smokers in 2003. Use 3 decimal places.
Mathematics
1 answer:
Genrish500 [490]3 years ago
4 0

Answer: 0.042

Step-by-step explanation:

Point estimate of the difference between the two population proportion p_x-p_y :-

\hat{p}_x-\hat{p}_y , where \hat{p}_x and \hat{p}_y are sample proportions.

Given : In 1991 survey , The proportion of adults were current smokers =25.6%

i.e. \hat{p}_x=0.256

In 2003 survey , The proportion of adults were current smokers = 21.4%

i.e. \hat{p}_y=0.214

Then , the point estimate of the difference between the proportion of current smokers in 1991 and the proportion of current smokers in 2003 :-

\hat{p}_x-\hat{p}_y=0.256-0.214=0.042

Hence, a point estimate of the difference between the proportion of current smokers in 1991 and the proportion of current smokers in 2003= 0.042

You might be interested in
A Theater has 500 seats. three-fourths of the seats are filled how many seats are filled? Explain your work
Orlov [11]
75% of 500 is 375
so there are 375 seats filled.
so that mean's there 125 seats left
4 0
3 years ago
Read 2 more answers
In 1999 there were 1647 daily and 7471 weekly newspapers published in the United States, as well as X other kinds of newspapers.
kompoz [17]
I'll do the math for this, it may take me a few minutes so i will update this comment with an answer in just a minute. I always get anxious when nobody replies kind of quickly as i feel it is being forgotten. So just a heads up i'm working on a answer!
4 0
3 years ago
On a number line, what is the distance between -12 and 20?
bija089 [108]
That would be a total of 32
3 0
3 years ago
Read 2 more answers
jack has a bag of fruits if he randomly selects a piece of fruit from the bag it is likely to be an apple what is a possible tha
denpristay [2]

Answer:

So far we know Jack has a bag of fruits and he if he randomly picks up a fruit from he will most likely get an apple. From this, we know that the percentage of an apple being picked is at least above 50%. And since it is likely we know it could be close to a 70 : 30 ratio.

:)

8 0
3 years ago
Read 2 more answers
QGS-GAkhddsg/viewform?hr_submission=Chklovas 8. Gina has a summer job that pays $5 per hour. Which graph shows the 5 points rela
Hatshy [7]

Answer:

the graph should be of the line y=5x

Step-by-step explanation:

the x axis should be labeled hours and the y axis should be labeled amount earned or dollars

the coordinates on the graph should be

(1,5) (2,10) (3,15) (4,20) (5,25) (6,30)

I cannot see the answer choices but I hope this information helps you answer the question

3 0
2 years ago
Other questions:
  • In a fifth grade class 3/4 of the students like to go to the movies.Of the students who like to go to the movies 2/3 of them lik
    13·1 answer
  • The school cafeteria has eight very large cans of tomato sauce for making pizza.
    15·1 answer
  • If f(x) and it's inverse function, f^1(x) are both plotted on the same coordinates plane what is their point of intersection
    11·2 answers
  • Solve the inequality 2x < 8 - 4(2 - x)
    13·1 answer
  • You can run 1/5mi in 2 min how long will it take you you run 2mi
    11·1 answer
  • What are the measures of ∠a, ∠b, ∠c and ∠d? Explain how to find each of the angles. measure
    12·1 answer
  • Mr. and Mrs. Steele, deposited $8,000 to open a college savings account for their granddaughter on the day she was born. The acc
    12·1 answer
  • An object is moving to the right. Instead, you want it to move up (but not in a diagonal). In what direction (directions) should
    14·1 answer
  • Is (0, 2) a solution to the equation y = 7x?
    6·2 answers
  • 33) Given the graphs of f(x) = x - 1 and g(x) = -x - 7, what is the solution to the equation f(x) = g(x)?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!