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
Help me with my geometry
GalinKa [24]

What do you need help with? I'm looking for points mate..

6 0
3 years ago
24% of students buy there lunch, 190 students bring their lunch from home. How many students are there in total
miv72 [106K]

so we know that 24% of the students buy their lunch at the cafeteria, and 190 students brownbag.

well, 100% - 24% = 76%, so the remainder of the students, the one that is not part of the 24% is 76%, and we know that's 190 of them.

since 190 is 76%, how much is the 24%?


\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 190&76\\ x&24 \end{array}\implies \cfrac{190}{x}=\cfrac{76}{24}\implies 4560=76x \\\\\\ \cfrac{4560}{76}=x\implies 60=x \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{total amount of students}}{190+60\implies 250}

6 0
3 years ago
Read 2 more answers
Α + 4/5 = 3<br> Solve for a to make the proportion true
Natali5045456 [20]
4/15 should be your answer!
5 0
2 years ago
Read 2 more answers
A carpenter is building a rectangular room with a fixed perimeter of 440 ft. what are the dimensions of the largest room that ca
olga55 [171]
The biggest it can be is 110 by 110, and the area would be 2,100 ft.

Hope this helps!
4 0
3 years ago
The solids are similar. Find the surface area of the shaded figure.
kirill [66]
264 because you can do 8 divided by 6 and get 1.3 repeating, than you would do 198 times 1.333333333333 and you get 264
7 0
2 years ago
Other questions:
  • Anyone know? Help is much appreciated
    7·1 answer
  • The base of an isosceles triangle is parallel to the x-axis. The y-axis passes through an end point of the base. If the endpoint
    12·1 answer
  • I need help with my exit ticket
    6·2 answers
  • Helppppppppppppppppppppppppppppp what is 8/0
    12·2 answers
  • #17 please help me solve this
    8·1 answer
  • One faucet fills up a bathtub in 15 minutes while the second fills it up in 10 minutes. If both faucets are turned on, what frac
    10·1 answer
  • I think of a number, multiply it by 2, add 7 and the result is 10​
    6·1 answer
  • Arrange the numbers in order from least to greatest.
    9·1 answer
  • A laundry basket has 24-shirts in it. Four are navy, 12 are red, and the remaining are white. What is the probability of not sel
    8·2 answers
  • What is 222,702 round to the nearest ten thousand
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!