« previous next »

Author Question: The random variable x represents the number of girls in a family of three children. Assuming that ... (Read 49 times)

penguins

  • Hero Member
  • *****
  • Posts: 903
on: Jul 25, 2018
The random variable x represents the number of girls in a family of three children. Assuming that boys and girls are equally likely, find the mean and standard deviation for the random variable x.
 
  A) mean: 1.50; standard deviation: 0.87 B) mean: 2.25; standard deviation: 0.76
  C) mean: 1.50; standard deviation: 0.76 D) mean: 2.25; standard deviation: 0.87

Question 2

A/An __________ is a subset of data selected from a population.
 
  A) variable B) experimental unit C) statistic D) sample


srodz

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jul 25, 2018
Answer to Question 1

A

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Children Understanding Death Children Understanding Death
Avogadro's number calculation Avogadro's number calculation
“Career choice” for many women means leaving their paid jobs for a number of years when they ... “Career choice” for many women means leaving their paid jobs for a number of years when they ...
The Number of Children Americans Think Are Ideal The Number of Children Americans Think Are Ideal
Physical and indirect aggression of boys and girls across childhood Physical and indirect aggression of boys and girls across childhood
Number line (5 - 1) Number line (5 - 1)
Video: Introduction to Genetics

For a complete list of videos, visit our video library