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

Author Question: Cement for building a dam is delivered by truck. The dispatcher wants to estimate the average driver ... (Read 82 times)

jc611

  • Hero Member
  • *****
  • Posts: 552
on: Jun 24, 2018
Cement for building a dam is delivered by truck. The dispatcher wants to estimate the average driver time required to load, drive to the dam, unload, and drive back to the plant. The time is assumed to be normally distributed. Total time required is recorded for a random sample of 18 with a mean of 543.71 and a standard deviation of 69.83 . Use these data to obtain an 80-percent confidence interval for the average driver time. ___________________ _ to ___________________ _
 Fill in the blank(s) with correct word

Question 2

For a selected month, the average kilowatt hours used for 49 residential customers showed that x is 1160 and s is 1085 . Compute a 98 confidence interval estimate for the true mean. ___________________ _ to ___________________ _
 Fill in the blank(s) with correct word


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

CharlieArnold

  • Sr. Member
  • ****
  • Posts: 319
Reply #1 on: Jun 24, 2018
Answer to Question 1

521.77; 565.65

Answer to Question 2

786.91; 1533.08


jc611

  • Hero Member
  • *****
  • Posts: 552
Reply #2 on: Jun 24, 2018
Thank you


CharlieArnold

  • Sr. Member
  • ****
  • Posts: 319
Reply #3 on: Jun 24, 2018
No problemo


« previous next »
 

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

Approximately 500,000 babies are born each year in the United States to teenage mothers.

Did you know?

The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

Average optimal blood pressure for age Average optimal blood pressure for age
Functional MRI Scans These scans of human brains show localized average increases in neural activity Functional MRI Scans These scans of human brains show localized average increases in neural activity
Shope’s Model of Young Driver Crash Risks The model shows that many factors contribute to crash ris Shope’s Model of Young Driver Crash Risks The model shows that many factors contribute to crash ris
Renzo Piano Building Workshop, Aerial view of Kansai International Airport, Osaka, Japan. Renzo Piano Building Workshop, Aerial view of Kansai International Airport, Osaka, Japan.
A typical module-controlled high-side driver (HSD) where the module itself supplies the electrical ... A typical module-controlled high-side driver (HSD) where the module itself supplies the electrical ...
In plant fossils, leaf margin is used to estimate mean annual temperature In plant fossils, leaf margin is used to estimate mean annual temperature
Video: ACTH/Cortisol (glycogenolysis, protein catabolism, lipolysis and gluconeogenesis)

For a complete list of videos, visit our video library