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 276 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?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

faimly forms faimly forms
Biology Teacher Biology Teacher
Distribution and Forms of Precipitation: Snow Distribution and Forms of Precipitation: Snow
How Precipitation Forms How Precipitation Forms
Examples of Primary (Congenital) Forms of Immunodeficiency Examples of Primary (Congenital) Forms of Immunodeficiency
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
Video: Carbohydrate digestion - mouth and stomach & pancreas and small intestine

For a complete list of videos, visit our video library