Author Question: A sales manager for a company that makes commercial ovens for restaurants is interested in ... (Read 120 times)

humphriesbr@me.com

  • Hero Member
  • *****
  • Posts: 550
A sales manager for a company that makes commercial ovens for restaurants is interested in estimating the average number of restaurants in all metropolitan areas across the entire country. He does not have access to the data for each metropolitan location, so he had decided to select a sample that will be representative of all such areas, and will use a sample size of 30 . Do you believe that simple random sampling is the best approach to obtaining a representative subset of the metropolitan areas in the given frame? Explain. If not, recommend how the sales manager might proceed to select a better sample of size 30 from this data?

Question 2

In contrast to linear trend, an exponential trend is appropriate when the time series changes by a:
 a. constant amount each time period
  b. constant percentage each time period
  c. positive amount each time period
  d. negative amount each time period



nicoleclaire22

  • Sr. Member
  • ****
  • Posts: 318
Answer to Question 1

Using a simple random sample may not be the best approach. If you are trying to determine the number of restaurants in metropolitan areas, it seems as though this would be somewhat dependent on the size (population) of the metropolitan areas under investigation. It may be better to stratify the samples. You could divide the metropolitan areas into several strata based on their population and then sample within each stratum. This may be more representative of the metropolitan areas across the country.

Answer to Question 2

b



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

For a complete list of videos, visit our video library