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

Author Question: When the data have the properties of ordinal data and the interval between observations is expressed ... (Read 88 times)

TVarnum

  • Hero Member
  • *****
  • Posts: 548
When the data have the properties of ordinal data and the interval between observations is expressed in terms of a fixed unit of measure, the variable has which scale of measurement?
 a. nominal
  b. ordinal
  c. interval
  d. ratio

Question 2

Suppose that the amount of time teenagers spend playing computer games per week is normally distributed with a standard deviation of 1.5 hours. A sample of 100 teenagers is selected at random, and the sample mean computed as 6.5 hours. Determine the 95 confidence interval estimate of the population mean if the sample size is changed to 300.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

upturnedfurball

  • Sr. Member
  • ****
  • Posts: 334
Answer to Question 1

c

Answer to Question 2

LCL = 6.33 and UCL = 6.67 (hours per week)




TVarnum

  • Member
  • Posts: 548
Reply 2 on: Aug 1, 2018
Wow, this really help


bimper21

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Gracias!

 

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

Human kidneys will clean about 1 million gallons of blood in an average lifetime.

Did you know?

When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

Did you know?

The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

For a complete list of videos, visit our video library