« previous next »

Author Question: Consider the following linear transformation of a random variable y = where x is the mean of x and x ... (Read 178 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?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

The linear meiosis of Neurospora The linear meiosis of Neurospora
Transduction conjugation and transformation Transduction conjugation and transformation
The schematic of a variable valve timing control circuit, showing that battery power (+) is being ... The schematic of a variable valve timing control circuit, showing that battery power (+) is being ...
How to solve a linear system by the substitution method How to solve a linear system by the substitution method
Bacteriophage double-strand DNA (linear) Bacteriophage double-strand DNA (linear)
Discrete random variables- Probability Distribution Function Discrete random variables- Probability Distribution Function
Video: Pores and Ion Channels

For a complete list of videos, visit our video library