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

Author Question: Drake Marketing and Promotions has randomly surveyed 200 men who watch professional sports. The men ... (Read 145 times)

jc611

  • Hero Member
  • *****
  • Posts: 552
on: Jun 24, 2018
Drake Marketing and Promotions has randomly surveyed 200 men who watch professional sports. The men were separated according to their educational level (college degree or not) and whether they preferred the NBA or the National Football League (NFL).
 
  The results of the survey are shown:Sports Preference College Degree No College DegreeNBA 40 55NFL 10 95What is the probability that a randomly selected survey participant prefers the NFL?A) 0.5250
  B) 0.2000
  C) 0.6050
  D) 0.5880

Question 2

In estimating a population mean, under what conditions would the t-distribution be used?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bigcheese9

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jun 24, 2018
Answer to Question 1

A

Answer to Question 2

The t-distribution is used to obtain the critical value for a confidence interval estimate for the population mean when the value for the population standard deviation is unknown or the sample size is reasonably small. Technically, the t-distribution can be used when the standard deviation is not known, but since the t-distribution and the z-distribution converge for large samples, it generally does not matter in cases where the sample size is large. It should be noted that the t-distribution is based on the assumption that the population is normally distributed. However, the t-distribution is usable as long as the population is reasonably symmetric.


jc611

  • Member
  • Posts: 552
Reply 2 on: Jun 24, 2018
:D TYSM

irishcancer18

  • Member
  • Posts: 310
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

The FDA recognizes 118 routes of administration.

Head impact during sports may reduce ability to acquire new information Head impact during sports may reduce ability to acquire new information
Where Professional Psychologists Work Primary employment settings for PhD recipients in psychology. Where Professional Psychologists Work Primary employment settings for PhD recipients in psychology.
Sports and Fitness Timeline Sports and Fitness Timeline
Sports drinks can replace electrolytes and fluids lost during exercise Sports drinks can replace electrolytes and fluids lost during exercise
Basic Marketing Research: Using Microsoft Excel Data Analysis Basic Marketing Research: Using Microsoft Excel Data Analysis
Video: Gas exchange - partial pressure, locations, external and internal respiration

For a complete list of videos, visit our video library