« previous next »

Author Question: A two-way contingency table is analyzed with a . a. chi-square goodness-of-fit test b. ... (Read 72 times)

jayhills49

  • Hero Member
  • *****
  • Posts: 559
on: Aug 1, 2018
A two-way contingency table is analyzed with a .
 
  a. chi-square goodness-of-fit test
  b. chi-square test of independence
  c. Mann-Whitney U test
  d. Wilcoxon signed-ranks test

Question 2

A manufacturer uses a new production method to produce steel rods.
 
  A random sample of 17 steel rods resulted in lengths with a standard deviation of 4.6 cm. At the 0.10 significance level, test the claim that the new production method has lengths with a standard deviation different from 3.5 cm, which was the standard deviation for the old method.


voltaire123

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Aug 1, 2018
Answer to Question 1

B

Answer to Question 2

Test statistic: X2 = 27.637. Critical values: X2 = 7.962, 26.296. Reject . There is sufficient evidence to support the claim that the standard deviation is different from 3.5.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Table of Ionic Charges Table of Ionic Charges
Patient having glaucoma test. Patient having glaucoma test.
Examples of the Types of Cards Used in a Test of Inductive Reasoning Examples of the Types of Cards Used in a Test of Inductive Reasoning
Stand at the side of the table facing the head. Apply lubricant with effleurage from ankle to hip ... Stand at the side of the table facing the head. Apply lubricant with effleurage from ankle to hip ...
DOT placarding requirements: Table 1 materials must be placarded in any quantity, and Table 2 ... DOT placarding requirements: Table 1 materials must be placarded in any quantity, and Table 2 ...
Compression Test: The Hose Trick Compression Test: The Hose Trick
Video: Deafness Culture

For a complete list of videos, visit our video library