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
daser333 [38]
3 years ago
9

Data for the estimated number of HIV cases worldwide between 1988 and 1996 suggests exponential growth in the number of cases ov

er this time period. An appropriate transformation of the data (base-ten logarithms were used) produced a strongly linear scatterplot, and a regression analysis was performed on the transformed data.
Here is the computer output:
Predictor Constant Coef SE Coef T F
-151.281 2.038 -74.22 0.000
Year 0.076577 0.001023 74.84 0.000
S= 0.00792598 R-Sq= 99.9% R-Sg (adj ) =99.9%
Note that HIV cases are in millions.
Which of the following value is closest to the value that this model predicts for the number of HIV cases in 1998?
(a) 1.72 million cases
(b) 2.18 million cases
(c) 17.2 million cases
(d) 52.5 million cases
(e) The predicted value is negative because we are extrapolating beyond the range o f the explanatory variable
Mathematics
1 answer:
Eduardwww [97]3 years ago
3 0

Answer:

d. 52.5 million cases

Step-by-step explanation:

from the data output in the question, we have the regression equation to be

log y = -151.281 + 0.076577x

y is the number of hiv cases which is in millions

x is the year of the hiv case

x = 1998

we put the value of x in the regression equation

log y = -151.281 + 0.076577(1998)

log y = -151.281 + 153.000846

log y  = 1.719846

since the result is in log form,

y=10^{1.791846}

y = 52.5 million cases

You might be interested in
On a certain hot​ summer's day, 645 people used the public swimming pool. The daily prices are $1.75 for children and $2.50 for
VladimirAG [237]

Answer:

327 children and 318 adults

Step-by-step explanation:

The x be the amount of children and y be the amount of adults that were at the swimming pool. We can use this to set up a system of equations:

x+y=645

1.75x+2.50y=1367.25

Move y to the other side in the first equation to isolate x and solve the system using substitution:

x=645-y

  1.75(645-y)+2.50y=1367.25

Distribute

1128.75-1.75y+2.50y=1367.25

         1128.75+0.75y=1367.25

Subtract 1128.75 from both sides

                        0.75y=238.5

Divide both sides by 0.75

                                y=318

x=645-y

x=645-318

x=327

327 children and 318 adults swam at the pool that day

4 0
2 years ago
What is 9/4 divided by 3/8?
Contact [7]
The answer would be 6
7 0
2 years ago
Read 2 more answers
Some friends shared 56 pretzels and 24 baby carrots. Each friend revived the same number of pretzels and baby carrots. What is t
Aleksandr-060686 [28]
The answer is 8 because it is the GCF (That means it is the greatest common factor)
HOPE THIS HELPS!!!!!!! ;-)
4 0
2 years ago
Read 2 more answers
A(1)=20
Paladinen [302]

Answer:

-14

Step-by-step explanation:

You've got a(1)=20

a(1) means a(n) when n=1

the sequence is telling you to take the previous value of a(n), which is a(n-1) and subtract 17

then:

a(2) = a(1)-17 = 20 - 17 = 3

a(3) = a(2) - 17 = 3-17 = -14

3 0
3 years ago
Let a triangle with integer angle measures have one angle of 116°. What is the largest possible angle measure opposite the small
sveta [45]

Answer:

what will I do here?

Step-by-step explanation:

sorry im still grade 3

3 0
2 years ago
Other questions:
  • Solve 7x/3< 2. please
    12·1 answer
  • What is the remainder when (3x3-2x+4x-3)is divided by (x2+3x+3)
    12·1 answer
  • Which is the next term in this pattern?
    7·2 answers
  • Subtract and simplify <br> 1/6m - (- 5/8m + 1/3)
    9·1 answer
  • 2y-4x=-18 slope intercept form
    9·2 answers
  • Daniel is organizing his rock collection of 18 rocks into equal groups. How many possible ways can Daniel line up his rock colle
    8·1 answer
  • kim just went to the store and bought 2 presents that cost kim $1,800 and her Taxes or 88 cents how much does kimmlin have to pa
    10·1 answer
  • Subtract 9 from e. Then, divide by 2.
    12·2 answers
  • 3. The recycling center collects 343 aluminum cans in one day. How many cans will be collected in two weeks?
    12·1 answer
  • Solve the system of equations: 3x + 6y=6 and 2y - 3x = 6.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!