This topic contains a solution. Click here to go to the answer

Author Question: A research wants to take a simple random sample of about 10 of the factory workers at two ... (Read 297 times)

tatyanajohnson

  • Hero Member
  • *****
  • Posts: 569

  A research wants to take a simple random sample of about 10 of the factory workers at two different factories to study the number of hours worked per week. Factory A has approximately 10,000 employees and Factory B has about 25,000 employees. Which of the following statements is correct if Factory A and Factory B come from the same population?
 

  a.The sampling variability will be higher for Factory A than for Factory B.
  b.The average number of hours must be known to make a statement about the sampling variability.
  c.The sampling variability will be lower for Factory A than for Factory B.
  d.The sampling variability will be the same for both Factory A and Factory B.

Question 2


  Which of the following is true with respect to the sampling distribution of sample means?
 

  a.If all possible random samples, each of size n, are taken from any population with mean and standard deviation , the sampling distribution of the sample mean will have a mean equal to and a standard deviation equal to .
  b.Only if the sampled population has a normal distribution then all possible random samples, each of size n, will also have a normal distribution with mean and standard deviation . The sampling distribution of the sample mean will have a mean equal to and a standard deviation equal to . This is not true if the population is not normally distributed.
  c.If all possible random samples, each of size n, are taken from any population with mean and standard deviation , the sampling distribution of the sample mean will have a mean equal to and a standard deviation equal to .
  d.If all possible random samples, each of size n, are taken from any population with mean and standard deviation , the sampling distribution of the sample mean will have a mean equal to and a standard deviation equal to .



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Cnarkel

  • Sr. Member
  • ****
  • Posts: 339
Answer to Question 1

correct: a

Answer to Question 2

correct: a




tatyanajohnson

  • Member
  • Posts: 569
Reply 2 on: Jun 24, 2018
Gracias!


hollysheppard095

  • Member
  • Posts: 339
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

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?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

For a complete list of videos, visit our video library