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
Vanyuwa [196]
3 years ago
15

One of the questions in the Pew Internet & American Life Project asked adults if they used the Internet, at least occasional

ly (Pew website, October 23, 2012).The results showed that 454 out of 478 adults aged 18-29 answered yes; 741 out of 833 adults aged 30-49 answered yes; and 1058 out of 1644 adults aged 50 and over answered yes.a. Develop a point estimate of the proportion of adults aged 18-29 whouse the Internet.b. Develop a point estimate of the proportion of adults aged 30-49 whouse the Internet.c. Suppose your target population of interest is that of all adults (18 yearsof age and over). Develop an estimate of the proportion of that population who use the Internet.
Mathematics
1 answer:
Marizza181 [45]3 years ago
7 0

Answer:

Part (a) The point estimate of the proportion of adults aged 18 to 29 who use the Internet is 0.9498.

Part (b) The point estimate of the proportion of adults aged 30 to 49 who use the Internet is 0.8896.

Part (b) Estimate of the proportion of population who use the Internet is 0.7624.

Step-by-step explanation:

Consider the provided information.

Part (a) point estimate of the proportion of adults aged 18 – 29 who use the Internet

The results showed that 454 out of 478 adults aged 18-29 answered yes;

\hat p=\frac{454}{478}=0.9498

The point estimate of the proportion of adults aged 18 to 29 who use the Internet is 0.9498.

Part (b) Develop a point estimate of the proportion of adults aged 30-49

741 out of 833 adults aged 30-49 answered yes;

\hat p=\frac{741}{833}=0.8896

The point estimate of the proportion of adults aged 30 to 49 who use the Internet is 0.8896.

Part (c) Suppose your target population of interest is that of all adults (18 years of age and over). Develop an estimate of the proportion of that population who use the Internet.

\hat p=\frac{454+741+1058}{478+833+1644}

\hat p=\frac{2253}{2955}=0.7624

Estimate of the proportion of population who use the Internet is 0.7624.

You might be interested in
Solve the equation, show all your work:<br><br> 6x - 3 = 21
OlgaM077 [116]

<u>Answer:</u>

  • The solution to the equation is 4.

<u>Step-by-step explanation:</u>

<u>Work:</u>

  • 6x - 3 = 21
  • => 6x = 21 + 3
  • => 6x = 24
  • => x = 4

Hence, <u>the solution to the equation is 4.</u>

Hoped this helped.

BrainiacUser1357

5 0
2 years ago
A set of 9 numbers has a mean of 20. What additional number must be included in this set to create a new set with a mean that is
PIT_PIT [208]

<em>Greetings from Brasil...</em>

The average for a set of 9 elements will be

(A + B + C + D + E + F + G + H + I) ÷ 9 = 20

Let's make (A + B + C + D + E + F + G + H + I) like S

<em>(I chose S to remember a sum)</em>

Let us think.....

S ÷ 9 = 20

S = 20 × 9

S = 180

So,  (A + B + C + D + E + F + G + H + I) = 180

According to the statement, we will include a number (element J) in the sum to obtain a mean of (20 - 4), that is:

<h3>(A + B + C + D + E + F + G + H + I + J) ÷ 10 = (20 - 4)</h3>

as seen above, (A + B + C + D + E + F + G + H + I) = 180, then

(180 + J) ÷ 10 = 16

(180 + J) = 160

J = 160 - 180

<h2>J = - 20</h2><h2 />

So, including the number - 20 <em>(minus 20)</em> in the original mean we will obtain a new mean whose result will be 16

3 0
3 years ago
Hey can you please help me posted picture of question
Aleksandr [31]
When the events are independent, the probability of both is the product of the probabilities of the individual events.
  P(A∩B) = P(A)×P(B) = 0.7×0.8 =
  D. 0.56
7 0
3 years ago
2. Using the substitution method, Jose is solving the following system of equations
Svetradugi [14.3K]

Answer:

3

Step-by-step explanation:

the answer is 3 if you check very well

5 0
3 years ago
What is the distance between (5,10) and (5,2)?
Licemer1 [7]
The distance is 8, since the x co-ordinate stays 5, the y co-ordinate goes from 10 to 2, which is an 8 distance
5 0
3 years ago
Other questions:
  • Charlie buys a cake for $23.99 and 6 bags of balloons. About how much money does he spend?
    14·2 answers
  • PLEASE ANSWER ILL MAKE YOU BRAINLIEST 2 questions
    8·2 answers
  • Graph the following and determine in which quadrants the graphs lie: y= 1/3x
    11·1 answer
  • Determine the relationship between the two triangles and whether or not they can be proven to be congruent. The two triangles ar
    7·1 answer
  • SOLVE <br> <img src="https://tex.z-dn.net/?f=%5Cfrac%7B12%7D%7B-4%7D" id="TexFormula1" title="\frac{12}{-4}" alt="\frac{12}{-4}"
    9·2 answers
  • Use the drop-down menus to complete each equation so the statement about its solution is true No Solutions 2T +5 2r 3r T One Sol
    11·1 answer
  • A school class went on a field trip to see a magician perform there were 17 females 20 males in the class the magicians randomly
    13·1 answer
  • Work out the y-intercept of the line going<br> through (1, 2) with a gradient of 3
    9·2 answers
  • Hi…math related (graphs) <br><br> The answer is supposed to something like F(0)= ?
    13·1 answer
  • Can someone help me with this problem? thank you!
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!