« previous next »

Author Question: Consider the following linear transformation of a random variable y = where x is the mean of x and x ... (Read 180 times)

jessicacav

  • Hero Member
  • *****
  • Posts: 558
on: Jun 29, 2018
Consider the following linear transformation of a random variable y = where x is the mean of x and x is the standard deviation. Then the expected value and the standard deviation of Y are given as
 
  A) 0 and 1
  B) 1 and 1
  C) Cannot be computed because Y is not a linear function of X
  D) and x

Question 2

The sample average is a random variable and
 
  A) is a single number and as a result cannot have a distribution.
  B) has a probability distribution called its sampling distribution.
  C) has a probability distribution called the standard normal distribution.
  D) has a probability distribution that is the same as for the Y1,..., Yn i.i.d. variables.


juliaf

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jun 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

Nearly all drugs pass into human breast milk. How often a drug is taken influences the amount of drug that will pass into the milk. Medications taken 30 to 60 minutes before breastfeeding are likely to be at peak blood levels when the baby is nursing.

Griffith's experiments that showed the transformation of bacteria by a “transfor Griffith's experiments that showed the transformation of bacteria by a “transfor
Random, regular, and clumped distributions. Random, regular, and clumped distributions.
Summation of Heart Sounds, Variable S1 Summation of Heart Sounds, Variable S1
Schematic representations of (a) linear, (b) branched, (c) crosslinked, and (d) network (three-dimen Schematic representations of (a) linear, (b) branched, (c) crosslinked, and (d) network (three-dimen
How to solve a linear system with three unknowns using substitution (Question 2 of 2) How to solve a linear system with three unknowns using substitution (Question 2 of 2)
How to set up and solve linear models (Question 2) How to set up and solve linear models (Question 2)
Video: Otitis Media

For a complete list of videos, visit our video library