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

Author Question: The economics department secretary wants to estimate the average number of bottled drinks sold each ... (Read 83 times)

armygirl

  • Hero Member
  • *****
  • Posts: 556
on: Jun 24, 2018
The economics department secretary wants to estimate the average number of bottled drinks sold each day out of the vending machine. Similar vending machine sales have a standard deviation of 9 bottles per day. He wants to be 95-percent confident that the estimate, x, obtained is within 3 bottles of the true mean . How large a sample is needed if the limit of the Coke machine for one day is 120?

Question 2

As marketing manager for a very large discount building supply, you wish to know what proportion of your city's population conducted do-it-yourself home improvement projects during the past year. The national percentage is 62; therefore, you decide to use this value in estimating sample size for a study to achieve 90 confidence with the estimate no more than 5 from the true proportion. If you know that the total city population is 30,000, what is the appropriate sample size?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cupcake16

  • Sr. Member
  • ****
  • Posts: 309
Reply #1 on: Jun 24, 2018
Answer to Question 1

27

Answer to Question 2

253


armygirl

  • Member
  • Posts: 556
Reply 2 on: Jun 24, 2018
Great answer, keep it coming :)

ktidd

  • Member
  • Posts: 319
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

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

Did you know?

Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ Change in Emotional States During Adolescence Average emotional state becomes teadilyi more negativ
Average Global Temperature Rise over the Past Century Average Global Temperature Rise over the Past Century
Essential Foundations of Economics Plus Essential Foundations of Economics Plus
Average Number of Days per Year with Thunderstorms Average Number of Days per Year with Thunderstorms
DNA Hypermethylation of Number of Known Genes DNA Hypermethylation of Number of Known Genes
Human Diseases Associated with Copy Number Variants Human Diseases Associated with Copy Number Variants
Video: Attention Deficit Disorder (ADD)

For a complete list of videos, visit our video library