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
Mila [183]
2 years ago
9

A national organization sets out to investigate the change in prevalence of HIV since the last census in 2010. A total of 4,706

participants were interviewed and a total of 468 responses were confirmed to be HIV positive. Assume that the data from the census indicated that the prevalence of HIV in the particular population was 7.5%.
Required:
Test if the proportion of the prevalence of HIV has changed (is equal to 7.5%). Use α = 0.05.
Mathematics
1 answer:
nikitadnepr [17]2 years ago
4 0

Answer:

As can be seen, there has been a rise in the proportion of the population with HIV positive, from 7.5% to 9.94%.

Step-by-step explanation:

Given that a national organization sets out to investigate the change in prevalence of HIV since the last census in 2010, ya total of 4,706 participants were interviewed and a total of 468 responses were confirmed to be HIV positive, assuming that the data from the census indicated that the prevalence of HIV in the particular population was 7.5%, to determine if the proportion of the prevalence of HIV has changed (is equal to 7.5%) the following calculation should be performed:

4706 = 100

468 = X

468 x 100/4706 = X

46,800 / 4,706 = X

9.94 = X

Therefore, as can be seen, there has been a rise in the proportion of the population with HIV positive, from 7.5% to 9.94%.

You might be interested in
You count customers going into the 5 pizza shops in your city. You get 56, 98, 43, 112, and 106. What is the median number of cu
tigry1 [53]

Answer:

Median = 98

Step-by-step explanation:

Organize the numbers in order from least to greatest: 43,56,98,106,112.

Than begin crossing the numbers out

56,98,106

98

8 0
3 years ago
Which simplified fraction is equal to 0.53 repeat ? A.24/46 B.8/15 C.42/90 D.5/9
murzikaleks [220]

Answer:

To see how these fractions are equal, I divided the numerators by the denominators. For instance, you could have 4 over 5 (4/5) and divide 4 by 5 (4/5) to get 0.8. Now you'll do the same thing for the fractions given

24/45=0.533...

8/15=0.533...

48/90=0.533...

5/9=0.5556

As you can see, the only fraction that doesn't equal 0.53, or the outlier, is 5/9 or 0.5556

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Which equation represents Grant's path?<br> y = 2 - 4x<br> y = 4-<br> y = 8 - 2x
Norma-Jean [14]
Y = 8 - 2x



beepboopbopbep
7 0
3 years ago
Read 2 more answers
Solve using demoivres theorem
pashok25 [27]
It's difficult to make out, but I think the task is to expand

(\sqrt3-i)^4

Write the number in polar form first:

\sqrt3-i=2e^{-i\pi/6}

By DeMoivre's theorem, you have

(\sqrt3-i)^4=\left(2e^{-i\pi/6}\right)^4=2^4e^{-i4\pi/6}=16e^{-i2\pi/3}

and converting back to Cartesian form, this number is equivalent to

16\left(\cos\dfrac{2\pi}3-i\sin\dfrac{2\pi}3\right)=16\left(-\dfrac12+-\dfrac{\sqrt3}2\right)=-8(1+i\sqrt3)
3 0
2 years ago
A city received 2 inches of rain each day for 3 days. the meteorologist said that if the rain had been snow , each inch of rain
muminat
30 inch of snow that day
3 0
3 years ago
Other questions:
  • A company produces items in small batches. The machinery needs to warm up before the items can be produced. The scatterplot show
    6·2 answers
  • What is 3 2/3 plus 4 2/5
    11·2 answers
  • 2=6<br> 3=12<br> 4=20<br> 5=30<br> 6=42<br> 9=?
    7·1 answer
  • Find x when y=6 in the literal equation 5x +4y =39
    8·2 answers
  • Jeremy’s family wants to rent bicycles. The table shows the cost in dollars, y, of renting a bicycle for x hours.
    11·1 answer
  • Slope of -5,4 and 3,-4​
    13·2 answers
  • Which number line shows the solution to the inequality 4x+ 5 &gt; 9​
    15·1 answer
  • Solve for x. Enter your answer in interval<br> notation using grouping symbols.<br> x2 + x &lt; 20
    10·2 answers
  • About how big is the outfield (green part)?
    8·1 answer
  • 2+2 equals?<br><br><br> I am very stuck on this question
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!