Why is a bedroom considered a poor study environment?Bedrooms are dimly lit.
Bedrooms are too small.
Bedrooms are too comfortable.
Bedrooms are messy and cluttered.

Answer:

Abstraction refines concepts to their core values, stripping away ideas to the fundamentals of the abstract idea. It leaves the common details of an idea. Abstractions make it easier to understand code because it concentrates on core features/actions and not on the small details.

This is only to be used for studying purposes.

Hope it helps!

Answer: Users expect to see a certain pattern in the data

Explanation:

Confirmatory Data Analysis occurs when the evidence is being evaluated through the use of traditional statistical tools like confidence, significance, and inference.

In this case, there's an hypothesis and the aim is to determine if the hypothesis is true. In this case, we want to know if a particular pattern on the data visualization conforms to what we have.

Answer:

P(x): x was given the placebo

D(x): x was given the medication

M(x): x had migraines

Explanation:

(a) Every patient was given the medication

Solution:

∀x D(x)

∀ represents for all and here it represents Every patient. D(x) represents x was given the medication.

Negation:¬∀x D(x).

This is the negation of Every patient was given the medication.

The basic formula for De- Morgan's Law in predicate logic is:

¬(P∨Q)⇔(¬P∧¬Q)

¬(P∧Q)⇔(¬P∨¬Q)

Applying De Morgan's Law:

          ∃x ¬D(x)

∃ represents there exists some. As D(x) represents x was given the medication so negation of D(x) which is ¬D(x) shows x was not given medication. So there exists some patient who was not given the medication.

Logical expression back into English:

There was a patient who was not given the medication.

(b) Every patient was given the medication or the placebo or both.

Solution:

∀x (D(x) ∨ P(x))

∀ represents for all and here it represents Every patient. D(x) represents x was given the medication. P(x) represents  x was given the placebo. V represents Or which shows that every patient was given medication or placebo or both.

Negation: ¬∀x (D(x) ∨ P(x))

This is the negation or false statement of Every patient was given the medication or the placebo or both.

Applying De Morgan's Law:

∃x (¬D(x) ∧ ¬P(x))

∃ represents there exists some. As D(x) represents x was given the medication so negation of D(x) which is ¬D(x) shows x was not given medication. As P(x) represents x was given the placebo so negation of P(x) which is ¬P(x) shows x was not given placebo. So there exists some patient who was neither given medication nor placebo.

Logical expression back into English:

There was a patient who was neither given the medication nor the placebo.

(c) There is a patient who took the medication and had migraines.

Solution:

∃x (D(x) ∧ M(x))

∃ represents there exists some. D(x) represents x was given the medication. M(x) represents x had migraines.  ∧ represents and which means patient took medication AND had migraines. So the above logical expression means there exists a patient who took medication and had migraines..

Negation:

¬∃x (D(x) ∧ M(x))

This is the negation or false part of the above logical expression: There is a patient who took the medication and had migraines.

Applying De Morgan's Laws:

∀x (¬D(x) ∨ ¬M(x))

∀ represents for all. As D(x) represents x was given the medication so negation of D(x) which is ¬D(x) shows x was not given medication. As M(x) represents x had migraines so negation of ¬M(x) shows x did not have migraines. ∨ represents that patient was not given medication or had migraines or both.

Logical expression back into English:

Every patient was not given the medication or did not have migraines or both.

(d) Every patient who took the placebo had migraines.

Solution:

∀x (P(x) → M(x))

∀ means for all. P(x) represents  x was given the placebo. M(x) represents x had migraines. So the above logical expressions represents that every patient who took the placebo had migraines.

Here we are using conditional identity which is defined as follows:

Conditional identity, p → q ≡ ¬p ∨ q.

Negation:

¬∀x (P(x) → M(x))

¬∀ means not all. P(x) implies M(x). The above expression is the negation of Every patient who took the placebo had migraines. So this negation means that Not every patient who took placebo had migraines.

Applying De Morgan's Law:

∃x (P(x) ∧ ¬M(x))

∃ represents there exists some.  P(x) represents  x was given the placebo. ¬M(x) represents x did not have migraines. So there exists a patient who was given placebo and that patient did not have migraine.

Logical expression back into English:

There is a patient who was given the placebo and did not have migraines.

Java application:

Java is a programming language and computing platform first released by Sun Microsystems in 1995. It has evolved from humble beginnings to power a large share of today’s digital world, by providing the reliable platform upon which many services and applications are built.

//create a class MathTest.java

public class MathTest {

public static void main(String[] args) {

//a. The square root of 37

System.out.println("The square root of 37= " + Math.sqrt(37));

//b. The sine and cosine of 300

System.out.println("The sine of 300=" + Math.sin(300));

System.out.println("The cosine of 300=" + Math.cos(300));

//c. The value of the floor, ceiling, and round of 22.8

System.out.println("The value of the floor 22.8=" + Math.floor(22.8));

System.out.println("The value of the ceiling 22.8=" + Math.ceil(22.8));

System.out.println("The value of the round 22.8=" + Math.round(22.8));

//d. The larger and the smaller of the character ‘D’ and the integer 71

int number = 'D';

System.out.println("The larger of the character ‘D’ and the integer 71=" + Math.max(number, 71));

System.out.println("The Smaller of the character ‘D’ and the integer 71=" + Math.min(number, 71));

//A random number between 0 and 20

System.out.println("A random number between 0 and 20= "+(int)(Math.random()* 20 + 1));

}

}

Output:

The square root of 37= 6.082762530298219

The sine of 300=-0.9997558399011495

The cosine of 300=-0.022096619278683942

The value of the floor 22.8=22.0

The value of the ceiling 22.8=23.0

The value of the round 22.8=23

The larger of the character ‘D’ and the integer 71=71

The Smaller of the character ‘D’ and the integer 71=68

A random number between 0 and 20= 10

Learn more about the topic Java application:

brainly.com/question/15568820

Answer:

outline 3 computer system problem that could harm people and propose the way avoid the problemare:_

1. Computer Won't Start. A computer that suddenly shuts off or has difficulty starting up could have a failing power supply.
2. Abnormally Functioning Operating System or Software.
3. Slow Internet.