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
mario62 [17]
2 years ago
9

Suppose that IQ scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 14. Using the empirical ru

le, what percentage of IQ scores are between 58 and 142?
Mathematics
1 answer:
Brut [27]2 years ago
3 0

Answer:

99.7%

Step-by-step explanation:

Bell shaped curve by empirical rule is that if the standard deviation from the mean (left to right) is 1 deviation then about 68% of the data is in that range if it’s 2 standard deviations away then it’s 95% and 3 deviations away is 99.7%

142-100=42=3(14)

100-58=42=3(14)

Therefore the data is three standard deviations from the mean and this there is 99.7% of the data in this range.

You might be interested in
g (15 points) Suppose 42 out of 600 rats exposed to a potential carcinogen develop tumors. A control group of 350 rats not expos
vazorg [7]

Answer:

a) The relative risk is 1.8\overline{846153}

b) The attributable risk is 0.69 \overline{047619}

c) There is a relationship between exposure and tumor risk

Step-by-step explanation:

The number of exposed rats that develop tumors, a = 42

The number of rats exposed to the carcinogen = 600 rats

The number of exposed rats that did not develop tumors, b = 600 - 42 = 558

The number of not exposed rats in the control group = 350 rats

The number of rats that develop tumors in the control group, c = 13 tumors

The number of not exposed rats that did not develop tumors, d = 350 - 13 = 337  rats

a) The relative risk, RR = a/(a + b)/(c/(c + d))

∴ RR = (42/(42 + 558))/(13/(13 + 337)) = 49/26 = 1.8\overline{846153}

b) The attributable risk = (a - c)/a

∴ The attributable risk = (42 - 13)/42 = 0.69 \overline{047619}

c) The odds ratio = (a·b)/(c·d)

∴ The odds ratio = 42 × 558/(13 × 337) = 23439/4381 ≈ 5.35

Given that the result of attributable risk is positive, there is an indication that there is a higher probability to develop tumor when exposed to the potential carcinogen, therefore, there is a relationship between exposure and tumor risk

7 0
3 years ago
I need the answer pls
AleksAgata [21]

the answer is 32.........

8 0
2 years ago
Is the following relation a function? (4,2), (1,1), (0,0), (1, -1), (4, -2). Give the domain and range.
Vlada [557]
(x,y)
to be  a function
for every x, ther must be only 1 y to corespond to it
basically, x must NEVER repeat with a different y
list them

ah, we see (1,1) an d(1,-1)
also (4,2) and (4,-2)
double offense
1 repeats with 1 and -1
4 repeats with 2 and -2

not a function

domain is all x values
range is all y values
if they repeat, don't list them

domain=(0,1,4)
range=(-2,-1,0,1,2)
8 0
3 years ago
Big ideas math 15.3 question 14
KiRa [710]
Do you have a picture with the question?
6 0
2 years ago
What if the carrots were 50 cents less per pound how much Victoria pay for 8.5 pounds of carrots?
nikdorinn [45]
If you multiply 8.5 by 50 cents your answer will be 4.25
5 0
3 years ago
Other questions:
  • What is the square root of 576/5?
    5·1 answer
  • How do i put this in slope-intercept form. passes through 2,-2 and 4,-1​
    5·1 answer
  • PLEASE HELP ITS TIMED
    10·2 answers
  • What's the answer to this problem? 13-2(4m+8)+3m
    14·2 answers
  • The pumpkin festival is finally here! Ms Hooven bought two orange brownies and four pumpkin pies for a total of $25. Mr.Ziss bou
    7·1 answer
  • An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 120 engines
    13·1 answer
  • JNCHH$JCERLKERIUVHCEKCORCURNJ
    6·1 answer
  • What is the difference between the points (-3,4) and (-3,-5)?
    7·1 answer
  • Help please I don’t understand
    11·2 answers
  • 1 poir
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!