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
Amanda [17]
3 years ago
13

In the united states , 13 out of every 20 cans are recycled what percent of cans are recycled

Mathematics
1 answer:
WARRIOR [948]3 years ago
3 0

Answer:

75%

Step-by-step explanation:

You might be interested in
A Pew Internet poll asked cell phone owners about how they used their cell phones. One question asked whether or not during the
EastWind [94]

Answer:

a) \hat p=\frac{471}{1024}=0.460

The standard error is given by:

SE= \sqrt{\frac{\hat p(1-\hat p)}{n}}=\sqrt{\frac{0.460(1-0.460)}{1024}}=0.0156

And the margin of error is given by:

ME=z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}=1.96\sqrt{\frac{0.460(1-0.460)}{1024}}=0.0305

b) The 99% confidence interval would be given by (0.429;0.491)

Step-by-step explanation:

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The population proportion have the following distribution

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

Data given and notation  

n=1024 represent the random sample taken    

X=471 represent the people responded that they had used their cell phone while in a store within the last 30 days to call a friend or family member for advice about a purchase they were considering

\hat p=\frac{471}{1024}=0.460 estimated proportion of people responded that they had used their cell phone while in a store within the last 30 days to call a friend or family member for advice about a purchase they were considering    

p= population proportion of people responded that they had used their cell phone while in a store within the last 30 days to call a friend or family member for advice about a purchase they were considering

Part a

The confidence interval would be given by this formula

\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}

For the 95% confidence interval the value of \alpha=1-0.95=0.05 and \alpha/2=0.025, with that value we can find the quantile required for the interval in the normal standard distribution.

z_{\alpha/2}=1.96

The standard error is given by:

SE= \sqrt{\frac{\hat p(1-\hat p)}{n}}=\sqrt{\frac{0.460(1-0.460)}{1024}}=0.0156

And the margin of error is given by:

ME=z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}=1.96\sqrt{\frac{0.460(1-0.460)}{1024}}=0.0305

Part b

If we replace the values obtained we got:

0.460-1.96\sqrt{\frac{0.460(1-0.460)}{1024}}=0.429

0.460+1.96\sqrt{\frac{0.460(1-0.460)}{1024}}=0.491

The 99% confidence interval would be given by (0.429;0.491)

8 0
3 years ago
You flip a coin and then roll a fair six-sided die. The coin lands heads-up and the die shows an even number.
NNADVOKAT [17]

Answer:

1/6

Step-by-step explanation:

If you're asking for the probability that the coin is heads and the die is even. Hope this helps :)

1/3*1/2= 1/6

6 0
3 years ago
Read 2 more answers
Find the area of this,<br> Simplify your answer completely.
creativ13 [48]

Answer:

\frac{2}{15}  {cm}^{2}

Step-by-step explanation:

Area of Rectangle = Length x Breadth

=

\frac{1}{5}  \times  \frac{2}{3}  \\  =  \frac{2}{15}  {cm}^{2}

4 0
2 years ago
Help asp I’m on timed test
g100num [7]

Answer:

b

Step-by-step explanation:

6 0
2 years ago
0000003.09+0000002.1​
Ivanshal [37]

Answer:

5.19

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Write an expression that shows how to multiply 4 x 362 using place value and expanded form.
    10·1 answer
  • Intercepts of x-2y=2
    11·1 answer
  • Chords AB and CD intersect at point M. According to the diagram, which pair of numbers could represent lengths of segments CM
    14·2 answers
  • 1+9x14+12=? please help fast
    13·2 answers
  • The equation for the circle below is x^2+y^2=64 what is the length of the circle’s radius
    14·1 answer
  • Fark earns 2.5% interest on savings account each year if Clark device is 2 mm in to a savings account
    5·1 answer
  • Expand.<br> Your answer should be a polynomial in standard form.<br> (3c + 2)(c^2-6c-4)
    9·1 answer
  • Write an equation of the line that passes through (0, 4) and (0, -3)
    12·2 answers
  • At the toll booth, the chance that a driver has exact change is 1/4, independent of vehicle. Find the probability that no vehicl
    5·1 answer
  • A rectangular prism has a volume of 210 cubic meters. The length of the prism is 7 meters and the width is 6 meters. (Please hel
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!