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

Author Question: A teacher wants to see if two different forms of an exam are equivalent or if one of the exams is ... (Read 306 times)

OSWALD

  • Hero Member
  • *****
  • Posts: 580
on: Aug 30, 2019
A teacher wants to see if two different forms of an exam are equivalent or if one of the exams is more difficult than the other. She has 120 students, which she randomly sorts into two groups of 60. The group that that takes exam A has a mean score of 78.1% with a standard deviation of 5.6%. Exam B scores an average of 74.8% with a standard deviation of 8.7%.

Find and interpret a 95% confidence interval. Also explain how the values of your confidence interval correspond with your conclusion on #1.
Stats: Modeling the World ¦ Bock, Velleman, De Veaux ¦ 4th Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by OSWALD on Aug 30, 2019

sultansheikh

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Aug 30, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 25% of students answer this correctly


OSWALD

  • Hero Member
  • *****
  • Posts: 580
Reply #2 on: Aug 30, 2019
Thanks


sultansheikh

  • Sr. Member
  • ****
  • Posts: 335
Reply #3 on: Aug 30, 2019
Welcome :)


« previous next »
 

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Blood is approximately twice as thick as water because of the cells and other components found in it.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Distribution and Forms of Precipitation: Snow Distribution and Forms of Precipitation: Snow
Distribution and Forms of Precipitation: Rain Distribution and Forms of Precipitation: Rain
The two major forms of polynucleotide secondary structure The two major forms of polynucleotide secondary structure
Three active forms of vitamin A: all-trans-retinol, -retinal, and –retinoic acid Three active forms of vitamin A: all-trans-retinol, -retinal, and –retinoic acid
Non-Hormonal Forms of Birth Control Non-Hormonal Forms of Birth Control
The average percentages by polygraph exams The average percentages by polygraph exams
Video: Cardiac Cycle (Part 1 of 4)

For a complete list of videos, visit our video library