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

Author Question: You are taking a class with a large number of students. The professor notes that the midterm exam ... (Read 89 times)

dbose

  • Hero Member
  • *****
  • Posts: 597
on: Jul 24, 2018
You are taking a class with a large number of students. The professor notes that the midterm exam scores were bell-shaped but doesn't tell you the mean. You take a random sample of 10 students and construct a 95 confidence interval for the mean exam score. Now the professor wants to give everyone 5 extra points on the exam. How will your confidence interval change?
 a. The sample mean will increase by 5 points and the margin of error will also.
  b. The sample mean will increase by 5 points but the margin of error will stay the same.
  c. The sample mean will stay the same but the margin of error will increase by 5 points.
  d. Both the sample mean and the margin of error will remain unchanged.

Question 2

Which of the following statements is not true regarding a 95 confidence interval for the mean of a population?
 a. In 95 of all samples, the sample mean will fall within 2 standard errors of the true population mean.
  b. 95 of the population values will lie within 2 standard errors of the sample mean.
  c. In 95 of all samples, the true population mean will be within 2 standard errors of the sample mean.
  d. If you add and subtract two standard errors to/from the sample mean, in 95 of all cases you will have captured the true population mean.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

asdfasdf

  • Sr. Member
  • ****
  • Posts: 339
Reply #1 on: Jul 24, 2018
Answer to Question 1

B

Answer to Question 2

B


dbose

  • Hero Member
  • *****
  • Posts: 597
Reply #2 on: Jul 24, 2018
Thank you!


asdfasdf

  • Sr. Member
  • ****
  • Posts: 339
Reply #3 on: Jul 24, 2018
Always glad to help...


« previous next »
 

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Polar bears feed upon a number of marine mammals. They are currently at the centre of international Polar bears feed upon a number of marine mammals. They are currently at the centre of international
Meningocele. (a) A meningocele is a herniation of the meninges, usually associated with the spinal c Meningocele. (a) A meningocele is a herniation of the meninges, usually associated with the spinal c
Polyps and polyposis. A polyp is a protruding growth from a mucous membrane lining a hollow organ. I Polyps and polyposis. A polyp is a protruding growth from a mucous membrane lining a hollow organ. I
The three stages we go through to develop the ability of taking the role of the other. The three stages we go through to develop the ability of taking the role of the other.
A health care professional taking a radial pulse and common pulse points. A health care professional taking a radial pulse and common pulse points.
An 8th grade class develops a linear model that predicts the number of cheerios (a small round ... An 8th grade class develops a linear model that predicts the number of cheerios (a small round ...
Video: Brain Anatomy Animation (Part 2 of 2)

For a complete list of videos, visit our video library