« previous next »

Author Question: Regression analysis was applied between sales (in 10,000) and advertising (in 100) and the following ... (Read 60 times)

MirandaLo

  • Hero Member
  • *****
  • Posts: 538
on: Jun 24, 2018
Regression analysis was applied between sales (in 10,000) and advertising (in 100) and the following regression function was obtained. y = 50 + 8x Based on the above estimated regression line, if advertising is 1000, then the point estimate for sales (in dollars) is
 a. 8050.
  b. 130.
  c. 130,000.
  d. 1,300,000.

Question 2

The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months.
 a. What is the probability that a randomly selected watch will be in working condition for more than five years?
  b. The company has a three-year warranty period on their watches. What percentage of their watches will be in operating condition after the warranty period?
  c. What is the minimum and the maximum life expectancy of the middle 95 of the watches?
  d. Ninety-five percent of the watches will have a life expectancy of at least how many months?


bd5255

  • Sr. Member
  • ****
  • Posts: 386
Reply #1 on: Jun 24, 2018
Answer to Question 1

d

Answer to Question 2

a. 0.0668
b. 93.32
c. Min = 32.32 months Max = 63.68 months
d. 34.84 months


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Did you know?

The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

This girl has a long leg cast, which was applied after surgery to correct her clubfoot. This girl has a long leg cast, which was applied after surgery to correct her clubfoot.
Pulse oximetry with the sensor probe applied securely, flush with skin, making sure that both sensor Pulse oximetry with the sensor probe applied securely, flush with skin, making sure that both sensor
Oil pressure applied to the locking pin causes the inside of the lifter to freely move inside the ... Oil pressure applied to the locking pin causes the inside of the lifter to freely move inside the ...
Combustion analysis of 0.150 g of an unknown compound containing carbon, hydrogen, and oxygen ... Combustion analysis of 0.150 g of an unknown compound containing carbon, hydrogen, and oxygen ...
Microarray analysis for analyzing gene-expression patterns in a tissue Microarray analysis for analyzing gene-expression patterns in a tissue
Table - Correlation Analysis Table - Correlation Analysis
Video: Cardiac Cycle (Part 3 of 4)

For a complete list of videos, visit our video library