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VladimirAG [237]
3 years ago
14

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:
murzikaleks [220]3 years ago
8 0

Answer:

C

Step-by-step explanation:

i think so but it will help you

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The dot plot shows the number of flowers each science student was able to identify. A dot plot whose number line is labeled Numb
irina [24]

Answer:

The dot plot shows the number of flowers each science student was able to identify.

A dot plot whose number line is labeled Number of flowers identified. There are 2 dots above 0, 4 dots above 1, 5 dots above 2, 7 dots above 3, 4 dots above 4, 3 dots above 5, 2 dots above 6, 1 dot above 7, 2 dots above 8, 1 dot above 9, 1 dot above 10, and 1 dot above 12.

Select from the drop-down menus to correctly complete the statement.

The distribution of data is 1 "skewed right", with a mode of 2 "3", and a range of 3 "12".

Step-by-step explanation:

I took the test!

3 0
2 years ago
A department store is having a 55% off sale on all sport coats. If you have a coupon for an additional 10% off of any item, how
vlabodo [156]
<span>93.15 would be the answer</span>
8 0
3 years ago
The lengths of the legs of a right triangle are 12cm and 35cm. what is the length of the hypotenuse?
goldenfox [79]
To find the length of the hypotenuse we must use Pythagoras' Theorem: c^2 = a^2 + b^2, where c is the hypotenuse and a and b are side lengths

c^2 = a^2 + b^2
c^2 = 12^2 + 35^2
c^2 = 144 + 1225
c^2 = 1369
c = 37 cm

6 0
3 years ago
In the student council election, Davina received 50 votes, Binh received 40 votes and Eden received 80 votes. What is the ratio
lubasha [3.4K]

Answer:

4/5

Step-by-step explanation:

I hope this helps you

8 0
3 years ago
Read 2 more answers
Help please ! ill give brainliest if correct
Mashutka [201]

9514 1404 393

Answer:

  a) (-5±√10)/3 ≈ {-2.721, -0.613}

  b) (6±√21)/5 ≈ {0.283, 2.117}

Step-by-step explanation:

a) The relevant coefficients are ...

  a = 3, b = 10, c = 5

  x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x=\dfrac{-10\pm\sqrt{10^2-4\cdot3\cdot5}}{2\cdot3}=\dfrac{-10\pm\sqrt{40}}{6}\\\\\boxed{x=\dfrac{-5\pm\sqrt{10}}{3}\approx\{-2.721, -0.613\}}

__

b) The relevant coefficients are ...

  a = 5, b = -12, c = 3

  x=\dfrac{-(-12)\pm\sqrt{(-12)^2-4\cdot5\cdot3}}{2\cdot5}=\dfrac{12\pm\sqrt{84}}{10}\\\\\boxed{x=\dfrac{6\pm\sqrt{21}}{5}\approx\{0.283, 2.117\}}

7 0
3 years ago
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