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

Author Question: The monthly income of residents of Daisy City is normally distributed with a mean of 3,000 and a ... (Read 163 times)

tfester

  • Hero Member
  • *****
  • Posts: 534
on: Jun 24, 2018
The monthly income of residents of Daisy City is normally distributed with a mean of 3,000 and a standard deviation of 500.
 a. Define the random variable in words.
  b. The mayor of Daisy City makes 2,250 a month. What percentage of Daisy City's residents has incomes that are more than the mayor's?
 c. Individuals with incomes of less than 1,985 per month are exempt from city taxes. What percentage of residents is exempt from city taxes?
 d. What are the minimum and maximum incomes of the middle 95 of the residents?
  e. Two hundred residents have incomes of at least 4,440 per month. What is the population of Daisy City?

Question 2

A sample of 25 patients in a doctor's office showed that they had to wait an average of 35 minutes with a standard deviation of 10 minutes before they could see the doctor. Provide a 98 confidence interval estimate for the average waiting time of all the patients who visit this doctor. Assume the population of waiting times is normally distributed.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

HandsomeMarc

  • Sr. Member
  • ****
  • Posts: 360
Reply #1 on: Jun 24, 2018
Answer to Question 1

a. monthly income of residents of Daisy City
b. 93.32
c. 2.12
d. minimum = 2,020; maximum = 3,980
e. 100,000

Answer to Question 2

30.016 to 39.984


tfester

  • Member
  • Posts: 534
Reply 2 on: Jun 24, 2018
Gracias!

epscape

  • Member
  • Posts: 335
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

Common abbreviations that cause medication errors include U (unit), mg (milligram), QD (every day), SC (subcutaneous), TIW (three times per week), D/C (discharge or discontinue), HS (at bedtime or "hours of sleep"), cc (cubic centimeters), and AU (each ear).

Daisy Fleabane Daisy Fleabane
Aftermath of the 2005 Texas City Refinery Explosion Aftermath of the 2005 Texas City Refinery Explosion
The Abecedarian study was designed to help very low-income African American children prepare for ... The Abecedarian study was designed to help very low-income African American children prepare for ...
Working and Living and Playing in the City Dump of Phnom Penh, Cambodia Working and Living and Playing in the City Dump of Phnom Penh, Cambodia
Members of the British Punitive Expedition to Benin City Members of the British Punitive Expedition to Benin City
How the Distribution of Education Affects the Distribution of Income How the Distribution of Education Affects the Distribution of Income
Video: What are the Parts of a Plant Cell?

For a complete list of videos, visit our video library