This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which one of these X' variables is a discrete random variable? a. An experiment in chemistry is ... (Read 72 times)

daltonest1984

  • Hero Member
  • *****
  • Posts: 536
on: Jul 24, 2018
Which one of these X' variables is a discrete random variable?
 a. An experiment in chemistry is repeated many times and X is the time required for a reaction to occur in seconds.
  b. A student is randomly selected and X is the number of correct answers on a two question multiple-choice quiz.
  c. A UPS package is randomly selected and X is the weight in pounds of the package.
  d. A student is randomly selected and X is the distance they must travel in feet to go from their dorm room door to the door of their first class on Monday morning.

Question 2

In a randomly selected sample of 500 students at a University, 80 say they plan to graduate within 4 years. Calculate a 95 confidence interval for the proportion of all students who plan to graduate within 4 years.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bpool94

  • Sr. Member
  • ****
  • Posts: 354
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

(0.765, 0.835)


daltonest1984

  • Member
  • Posts: 536
Reply 2 on: Jul 24, 2018
Great answer, keep it coming :)

matt95

  • Member
  • Posts: 317
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

BMB 212 Experiment 6 BMB 212 Experiment 6
Mercury experiment Mercury experiment
A Schematic Description of the Experiment by Maviel et al. (2004) A Schematic Description of the Experiment by Maviel et al. (2004)
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
How to manually solve a linear system with three variables without matrices (Question 1 of 2) How to manually solve a linear system with three variables without matrices (Question 1 of 2)
The Meselson–Stahl experiment The Meselson–Stahl experiment
Video: Oxygen - hemoglobin dissociation curve & Hemoglobin's affinity with oxygen - acidity

For a complete list of videos, visit our video library