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
saveliy_v [14]
3 years ago
13

When you are in danger, which part of the nervous system is responsible for your heart rate increasing?

Advanced Placement (AP)
1 answer:
Sladkaya [172]3 years ago
4 0
Your answer is simply the sympathetic nervous system
 
Definition-The sympathetic nervous system (SNS) is part of the autonomic nervous system (ANS), which also includes the parasympathetic nervous system (PNS). The sympathetic nervous system activates what is often termed the fight or flight response.
You might be interested in
Is this study an experiment or an observational study? Explain your answer.
seraphim [82]

Answer:

Explanation:

Hello!

Full text in the attachment.

a)

Little reminder:

An observational study is one where the investigator has no control or intervenes on it. He just defines the variable of interest and merely collects and documents the information. These types of studies are usually made as precursors to a more formal experimental study, to have an idea of what's to be expected from the population.

An experimental study or experiment is one where the investigator intervenes by defining the variable of interest and artificially manipulates the study factor. It is also one of its characteristics the randomization of cases or subjects in groups (two or more, depending on what is the hypothesis of study).

This is an example of a double-blind experiment, in which neither the experimental subjects (volunteers students) nor the researcher (physician). Aside from the fact that the subjects were controlled to make sure they followed the assigned treatment, no other factors were controlled (sleeping habits, eating habits, previous medical conditions)

Still, there is enough intervention to classify it as an experimental study.

b)

You have calculated the probability of randomly selecting a student that contracted the flu. There is no specification about the group the student belongs, you have to calculate the probability of the total of students that contracted the flu.

Let F represent the event that "the student contracted the flu", you can calculate the probability as:

P(F)= \frac{total students that contracted the flu}{total students that participated in the trial}= \frac{633}{808}= 0.78

c)

In this case, you have to calculate the probability that the student contracted the flu, given that he was assigned to the "Vitamin C" group.

This is a conditional probability since you already know that the student was from the "Vitamin C" group (Symbolized V), instead of calculating the probability using the size of the total of volunteers, you'll use the total of students assigned to that group:

P(F/V)= \frac{Students that contracted the flu and took Vitamin C}{Total of students that took Vitamin C}= \frac{302}{403} = 0.75

d)

Two events are independent when the occurrence of one of them doesn't modify the probability of occurrence of the other one. In this case, we have the events F: "The student contracted the Flu" and V: "The student took vitamin C" if F and V are independent the probability of F should stay the same even whether or not he has taken vitamin C:

P(F)=P(F/V)

But as calculated in items b. and c. these probabilities are different, meaning that the events are not independent.

e)

The claim of the health expert is that "Vitamin C reduces the occurrence of the flu in the population of volunteer students, i.e. the number of students that contracted the flu given that they took vitamin C will be less than the number of students that contracted the flu given that the took the placebo.

The parameters of the study will be the population proportions of students with the flu that took vitamin C, p₁, and the population proportion of students with the flu that took the placebo, p₂.

H₀: p₁ ≥ p₂

H₁: p₁ < p₂

f)

Let's assume that α: 0.05, using the p-value approach, the decision rule is:

p-value ≤ α, reject the null hypothesis.

p-value > α, do not reject the null hypothesis.

The p-value: 0.0096 is less than α: 0.05, the decision is to reject the null hypothesis. At a 5% significance level, there is significant evidence to reject the null hypothesis, then the population proportion of students that contracted the flu given that they took t vitamin C is less than the proportion of students that contracted the flu given that they took the placebo.  You can conclude that the expert is correct and taking vitamin C reduces the occurrence of the flu among the students.

6 0
3 years ago
What is the answer to this math problem with full work advanced geometry
Alisiya [41]

Answer:

Chord UV = 5

Explanation:

Recall that Theorem of congruent chords relating to their arcs states that the intercepted arcs of two chords are congruent if the two chords are of the same length.

The converse of this theorem states that if two intercepted arcs of two corresponding chords are congruent, then the two chords are congruent to each other.

Let's apply the converse of this theorem to the problem given.

We are given that the intercepted arcs of chord UV and chord UT are 34° each.

Therefore, chord UV must be congruent to chord UT.

Since chord UT = 5

Therefore, chord UV = 5

6 0
3 years ago
Regina struggles with reading long passages and feels like no matter how hard she tries she will not understand them, so she ski
tresset_1 [31]

Answer:

uh

Explanation:

6 0
2 years ago
All of the following are examples of stage theories in development except __________. Kohlberg's theory of moral development Pia
iren [92.7K]

Answer:

sorry i was late but for anyone else who wants to know the answer is

D. Vygotsky's theory of cognitive development

Explanation:

4 0
2 years ago
Read 2 more answers
On January 18, 2019, Kim Reynolds delivered a speech shortly after taking the oath of office at the beginning of her second term
Levart [38]

Answer:

The current Lieutenant Governor of Iowa is Kim Reynolds. Reynolds assumed office as Lieutenant Governor of Iowa on January 14, 2011.

Explanation:

6 0
2 years ago
Other questions:
  • The behavior of a new employee who watches how his new colleagues behave is a. exuding a minority influence. b. displaying infor
    6·2 answers
  • Who is responsible for conducting fiscal policy
    12·1 answer
  • In your own opinion, Do animal deserve respect? why or why not? ​
    13·1 answer
  • Read the scenario below and answer the question that follows. Bailey is plagued with sleep problems at least a couple of times a
    11·1 answer
  • 3 Home Rule disadvantages and an example of a home rule.
    6·1 answer
  • Jnjnjnninimmmnrthnrthmnhnrhrgh
    8·1 answer
  • Question 5 of 10
    5·2 answers
  • It can be said that all subfields and perspectives within psychology have the same goal of:
    12·1 answer
  • What should we try to receive from the world through rigorous selection?
    5·1 answer
  • Prompt
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!