« previous next »

Author Question: Regression analysis was applied between sales (in 10,000) and advertising (in 100) and the following ... (Read 98 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?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Vaccines prevent between 2.5 and 4 million deaths every year.

Did you know?

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

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
Direct pressure applied to a sinus reflex on the tip of a toe. Direct pressure applied to a sinus reflex on the tip of a toe.
Modern Systems Analysis and Design (4th Edition) Modern Systems Analysis and Design (4th Edition)
The steps in the process of creating a karyotype for chromosome analysis. The steps in the process of creating a karyotype for chromosome analysis.
linear programming problem, applying simplex method and sensitivity analysis linear programming problem, applying simplex method and sensitivity analysis
GENETIC ANALYSIS GENETIC ANALYSIS
PCR analysis showing expansion of the CAG repeat region of the HD gene PCR analysis showing expansion of the CAG repeat region of the HD gene
Video: Blood Pressure Measurement

For a complete list of videos, visit our video library