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
kozerog [31]
4 years ago
6

There has been a trend toward less driving in the last few years, especially by young people. From 2001 to 2009 the annual vehic

le miles traveled by people from 16 to 34 years of age decreased from 10,300 to 7900 miles per person (U.S. PIRG and Education Fund website, April 6, 2012). Assume the standard deviation was 2000 miles in 2009. Suppose you would like to conduct a survey to develop a 95% confidence interval estimate of the annual vehicle-miles per person for people 16 to 34 years of age at the current time. A margin of error of 100 miles is desired. How large a sample should be used for the current survey?
Mathematics
1 answer:
rodikova [14]4 years ago
3 0

Answer: 1537.

Step-by-step explanation:

Formula for sample size :-

n=(\dfrac{z_{\alpha/2}\cdot \sigma}{E})^2

Given : \sigma=2000

Margin of error : E= 100

Critical value of 95% confidence : z_{\alpha/2}=1.96

Now, the required sample size will be :-

n=(\dfrac{1.96\cdot 2000}{100})^2\\\\=1536.64\approx1537

Hence, the minimum sample size required = 1537.

You might be interested in
Triangle ABC is similar to triangle XYZ solve for t?
inna [77]
I need a picture bud
3 0
3 years ago
What is an integer function?<br>​
djyliett [7]

Answer:

The INTEGER function returns an integer representation of a number or character string in the form of an integer constant.

Step-by-step explanation:

6 0
3 years ago
Describe the transformation that moved Figure A to Figure B?
gavmur [86]

Answer:

D

Step-by-step explanation:

Its kinda hard to explain but its the answer

7 0
3 years ago
How many diagonals can you draw from the vertex of an octagon
ludmilkaskok [199]
From one vertex of an octagon you can draw 5 diagonals.

There are 8 vertices in an octagon, and we are choosing one as our starting vertex. There are then 7 vertices left to draw a line to, but 2 of the vertices are already connected to our main vertex (because they are connected along the side of the octagon). That leaves 5 vertices to draw a diagonal to from our original vertex.
8 0
3 years ago
Paul,Linda,and Aaron make homemade cards. Paul can make 1 card for every 3 cards Linda makes. Linda can make 3 cards for every 2
dimaraw [331]

Answer:

Linda makes 72 more cards than Paul

during the week

Step-by-step explanation:

Here, we want to know how many cards Linda makes than Paul during the week.

We proceed as follows;

From the question;

If Paul makes 1 card, then Linda has made three

Now let’s get their relationship with Aaron;

If Aaron makes 2 cards , Linda has made three

Now since Aaron made 72 cards, Let’s say Linda has made x cards

Let’s get the value of x now

To get the value of x, we simply cross multiply;

2 - 3

72 - x

2 * x = 3 * 72

x = (3 * 72)/2 = 108 cards

Now recall , for every 3 cards of Linda, Paul made only 1;

So the number of cards Paul will make if Linda makes 108 will be 108/3 = 36

So the number of more cards that Linda makes than Paul during the week will be ; 108 -36 = 72 cards

3 0
4 years ago
Other questions:
  • find the mean and median for the following annual salaries (in thousands) for employees of the Widget Factory 38.5, 31.0, 29.8,
    12·1 answer
  • Calculate sum5.3 +(-7.45) =
    11·1 answer
  • Jack is playing a game. When a player wins 3 consecutive games, the player receives 10 bonus points and then the player’s total
    12·1 answer
  • And some more help there are a few more
    6·2 answers
  • The length of the radius of a bicycle wheel is 13 inches. Which of the following is closest to the
    6·1 answer
  • Can someone solve this
    8·2 answers
  • Where would you use an inequality in the real world
    15·2 answers
  • Nancy leaves the school and drives toward her town at 27 mph. greg leaves the same school 2 hours later and drives the same rout
    10·1 answer
  • Please help me I am struggling :((
    7·2 answers
  • Can someone please help me with this math question
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!