« previous next »

Author Question: Regression analysis was applied between sales (in 10,000) and advertising (in 100) and the following ... (Read 107 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 most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates’s recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

An electrocardiogram (ECG, EKG) is a commonly used procedure in which the electrical events associat An electrocardiogram (ECG, EKG) is a commonly used procedure in which the electrical events associat
Tumor marker analysis of a patient with no evidence of disease monitored for tumor recurrence. The ... Tumor marker analysis of a patient with no evidence of disease monitored for tumor recurrence. The ...
Kinetic analysis of spliceosome assembly Kinetic analysis of spliceosome assembly
Swot analysis Swot analysis
In a typical proteomic analysis, cells are exposed to different conditions In a typical proteomic analysis, cells are exposed to different conditions
Table - Analysis Table - Analysis
Video: Diversity of Living Creatures - Charles Darwin & the Beagle's Voyage

For a complete list of videos, visit our video library