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

Author Question: A random sample of 10 waiters in Weston, West Virginia, revealed the following hourly earnings, ... (Read 106 times)

sjones

  • Hero Member
  • *****
  • Posts: 520
on: Jun 24, 2018
A random sample of 10 waiters in Weston, West Virginia, revealed the following hourly earnings, including tips: 19, 18, 15, 16, 18, 17, 16, 18, 20, and 14 . (Units are dollars.)
 a. If the hourly earnings are normally distributed with a standard deviation of 4.50, estimate with 95 confidence the mean hourly earnings for all waitresses in Iowa City.
  b. Interpret your confidence interval.

Question 2

Multicollinearity affects the t-tests of the individual coefficients as well as the F-test in the analysis of variance for regression because the F-test combines the t-tests into a single test.
  Indicate whether the statement is true or false


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

14vl19

  • Sr. Member
  • ****
  • Posts: 310
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. LCL = 14.31 and UCL = 19.89.
b. Based on my sample, I estimate that the mean hourly earnings is between 14.31 and 19.89 . I am 95 confident that in repeated sampling, the population parameter would fall in the resulting interval.

Answer to Question 2

F


sjones

  • Member
  • Posts: 520
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

duy1981999

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

Did you know?

Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Feral Chincoteague ponies on Assateague Island, Virginia Feral Chincoteague ponies on Assateague Island, Virginia
West Siberian Laika West Siberian Laika
Blood glucose measurement. A postprandial test may be self-administered. (a) A lance pierces the ski Blood glucose measurement. A postprandial test may be self-administered. (a) A lance pierces the ski
Sample Exercise Program for Healthy Older Adults Sample Exercise Program for Healthy Older Adults
Discrete random variables- Probability Distribution Function Discrete random variables- Probability Distribution Function
Random X inactivation in female placental mammals Random X inactivation in female placental mammals
Video: Neural Reflex Arc Animation

For a complete list of videos, visit our video library