This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: We can describe graphically the shape of the distribution by a histogram, which can be symmetrical ... (Read 62 times)

nummyann

  • Hero Member
  • *****
  • Posts: 576
on: Jun 24, 2018
We can describe graphically the shape of the distribution by a histogram, which can be symmetrical or asymmetrical.
 
  Indicate whether the statement is true or false

Question 2

If X and Y are random variables with Var(X) = 7.5, Var(Y) = 6 and Cov(X, Y) = 4, then Var(2X + 3Y) is:
 
  A) 33
  B) 37
  C) 88
  D) 132


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

nothere

  • Sr. Member
  • ****
  • Posts: 324
Reply #1 on: Jun 24, 2018
Answer to Question 1

TRUE

Answer to Question 2

D


nummyann

  • Member
  • Posts: 576
Reply 2 on: Jun 24, 2018
Gracias!

Viet Thy

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

Thyroid conditions may make getting pregnant impossible.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

Four main models that describe the relationship between ecosystem function and biodiversity. Four main models that describe the relationship between ecosystem function and biodiversity.
Winter distribution of the American crow, Corvus brachyrynchos. Winter distribution of the American crow, Corvus brachyrynchos.
SICKLE SHAPE SICKLE SHAPE
Average Distribution of Incoming Solar Radiation Average Distribution of Incoming Solar Radiation
Spacecraft optimum geometrical shape Spacecraft optimum geometrical shape
Vascular Distribution and Control of Circulation Vascular Distribution and Control of Circulation
Video: Bond in biological molecules (Ionic, Covalent and Hydrogen bonds)/ How atoms bond?

For a complete list of videos, visit our video library