« previous next »

Author Question: An engineer for an electric fencing company is interested in the mean length of wires being cut ... (Read 26 times)

tuffie

  • Hero Member
  • *****
  • Posts: 534
on: Jun 24, 2018
An engineer for an electric fencing company is interested in the mean length of wires being cut automatically by machine. The desired length of the wires is 12 feet. It is known that the standard deviation in the cutting length is 0.15 feet. Suppose the engineer decided to estimate the mean length to within 0.025 with 99 confidence. What sample size would be needed?

Question 2

If the Durbin-Watson statistic d has values smaller than 2, this indicates
 a. a positive first-order autocorrelation
  b. a negative first-order autocorrelation
  c. no first-order autocorrelation at all
  d. None of these choices.


missalyssa26

  • Sr. Member
  • ****
  • Posts: 327
Reply #1 on: Jun 24, 2018
Answer to Question 1

n = 240 (using z = 2.58)

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

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?

Thyroid conditions may make getting pregnant impossible.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Engine and electric motor for the Toyota Prius Engine and electric motor for the Toyota Prius
Spiral Produced by twisting stresses that are spread along the length of a bone (note the break in t Spiral Produced by twisting stresses that are spread along the length of a bone (note the break in t
Small nuclear RNAs (snRNA), 100-200 bp in length, form part of the splicing mechanisms to process mR Small nuclear RNAs (snRNA), 100-200 bp in length, form part of the splicing mechanisms to process mR
Electric Eel Electric Eel
To check to see if the electric fuel pump can be operated from the relay contacts, use a fused ... To check to see if the electric fuel pump can be operated from the relay contacts, use a fused ...
Jia's Fashions recently paid a $2 annual dividend. The company is projecting that its ... Jia's Fashions recently paid a $2 annual dividend. The company is projecting that its ...
Video: Structures that affect circulation - arterioles and vasomotor responses and venous return

For a complete list of videos, visit our video library