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

Author Question: A teacher finds that final grades in the statistics department are distributed as: A, 25%; B, 25%; ... (Read 100 times)

kaid0807

  • Hero Member
  • *****
  • Posts: 515

Question 1

A teacher finds that final grades in the statistics department are distributed as: A, 25%; B, 25%; C, 40%; D, 5%; F, 5%. At the end of a randomly selected semester, the following grades were recorded. Calculate the chi-square test statistic χ2 used to determine if the grade distribution for the department is different than expected. Use α = 0.01.


◦ 5.25
◦ 6.87
◦ 4.82
◦ 3.41

Question 2

A teacher finds that final grades in the statistics department are distributed as: A, 25%; B, 25%; C, 40%; D, 5%; F, 5%. At the end of a randomly selected semester, the following grades were recorded. Find the rejection region used to determine if the grade distribution for the department is different than expected. Use α = 0.01.


χ2 > 13.277
χ2 > 7.779
χ2 > 11.143
χ2 > 9.488


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by kaid0807 on Feb 14, 2020

mohan

  • Sr. Member
  • ****
  • Posts: 362
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




kaid0807

  • Member
  • Posts: 515
Reply 2 on: Feb 14, 2020
:D TYSM


komodo7

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Excellent

 

Did you know?

More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

For a complete list of videos, visit our video library