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
lys-0071 [83]
3 years ago
11

Increases in life expectancy in the united states during the twentieth century were due primarily to

Social Studies
1 answer:
VARVARA [1.3K]3 years ago
8 0
<span>Increases in life expectancy in the united states during the twentieth century were due primarily to </span>The control of childhood and infectious diseases. Before the development of vaccines and antibiotics, more than 1/3 of human population dies before their old ages due to some fatal diseases that will be easily cured buy today's medical standard
You might be interested in
Jamestown was the first capital of virginia.then the capital moved to where
Veronika [31]
Williamsburg was the second capital I believe 
4 0
3 years ago
Read 2 more answers
Dr. Rodriguez was interested in how quickly students help someone who has fallen and who was perceived as having a health proble
Aleonysh [2.5K]

Answer:

Kindly check explanation

Explanation:

Given the data :

Person perceived as having health problem

No witnessing fall _____ secs it takesto respond

1 _______________25

3 ______________ 60

5 ______________ 180

Person perceived as not having health problem

No witnessing fall _____ secs it takesto respond

1 _______________90

3 ______________ 180

5 ______________ 360

A.)

The dependent variable, also the predicted variable is 'how quickly students respond to the person who fell'

The Independent variable refers to the predictor variable which influences the outcome of the dependent variable. The independent variables are ;

Number of students in the room ;

Perception of health problem in the person who fell.

2.)

The possible confounding variable may be the cane being held by one of the confederates, as this might cause a disruptive association between the dependent and independent variable.

3.)

From the result of the experiment, it could be observed that there is a positive trend between the number of witnesses(student in the room) and the time it took students to respond to someone who has fallen.

4.

Σfx / Σf

[(90*1) + (180*3) + (360*5)] ÷ (1+3+5)

2430 / 9

= 270

a.

Descriptive statistics uses statistical measures to describes the numerical or quantitative measures of a data. Descriptive statistics sucha as mean, median, mode and so on.

Inferential statistics is used to make possible deductions or predictions from a data sample. It allows us to make conclusions about a certain population from a sample to f the population data.

b.

Based on Inferential statistics and hypothesis testing of the sample data, various hypothesis test statistics may be used to establish or conclude about a population characteristics from sample data.

7 0
3 years ago
According to the passage, how were people in democracies similar to people in the Soviet Union?
zhannawk [14.2K]

Answer:

A. Like the Soviets, people in democracies B. Like the Soviets, people in democratic

were not worried about a different form of

societies also felt communism was an

attack on liberty and freedom

government

C. Like the Soviets, people in democracies

thought communists were spies.

D. Like the Soviets, people in democracies

worried about a different form of

government

5 0
2 years ago
After the Scientific Revolution, scientists no longer made their ideas about science fit -the results of their experiments. -the
OleMash [197]
The only answer related to the subject is "the results of their experiments".
After Scientific revolution scientists came up with theoretical conceptions and tried to prove them with experiments. There had to be both theoretical explanation and emirical proof. Before they were much more liberal when it comes to coming up with "scientific theorems", which explained results of their experiments.
4 0
3 years ago
The only system that does not pass through the thalamus on its way to the cerebral cortex is the __________ system. A. tactile B
PIT_PIT [208]
The an
wser would be c

7 0
3 years ago
Read 2 more answers
Other questions:
  • IM GIVING 40 POINTS!!! EXPLAIN!!!! NEED 2 B CORRECT
    7·1 answer
  • Alcoholics Anonymous encourages behavioral changes by teaching people how to submit to strict discipline to correct a problem. W
    6·1 answer
  • People who agree to work in exchange for passage to the colonies blank servant
    10·1 answer
  • Which amendment required states to extend citizenship to African Americans
    14·1 answer
  • Which of the broad areas of I-O psychology interests you the most and why?
    10·1 answer
  • According to the lab safety sheet, in the Epidemiology &amp; Laboratory Techniques lab all microcentrifuge tubes, pipette tips a
    15·1 answer
  • Terracing
    15·1 answer
  • Why was the concept of the Anglo-Saxon race developed?
    7·1 answer
  • What is one famous quote by Harriet Tubman?
    6·2 answers
  • Explain two reasons why some religious believers may be prepared to fight in a war.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!