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

Author Question: A researcher is interested in studying the relationship between money and marriages. He randomly ... (Read 51 times)

Ebrown

  • Hero Member
  • *****
  • Posts: 567
on: Jul 25, 2018
A researcher is interested in studying the relationship between money and marriages. He randomly stopped adults at a shopping mall on a Saturday afternoon and asked them to fill out a questionnaire. The questions included:
 
  1. Are you married?
  2. How much do you have in your savings account?
  3. Do you have a separate account from your spouse?
 
  a. Identify the experimental units in this study.
  b. Identify the variables of interest. Are they quantitative or qualitative variables?
  c. Identify the data collection method used.
  d. Do you think the sample resulting from this study is one representative of the population? Explain.
  e. Do you think this sample qualifies as a random sample?

Question 2

A local rental car agency has 50 cars. The rental rate for the winter months is 60. Find the probability that in a given winter month at least 35 cars will be rented. Use the normal distribution to approximate the binomial distribution.
 
  Round the standard deviation to three decimal places to work the problem.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jaymee143

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jul 25, 2018
Answer to Question 1

a. adults
b. marital status: qualitative;  in savings account: quantitative; separate accounts: qualitative
c. survey
d. no; the adults that were at the mall on that day and were willing to fill out the questionnaire cannot be guaranteed to be representative of all adults
e. no

Answer to Question 2

P(x  34.5 ) = 0.0968


Ebrown

  • Member
  • Posts: 567
Reply 2 on: Jul 25, 2018
Gracias!

Mochi

  • Member
  • Posts: 300
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.

Schematic relationship between a phylogenetic tree and taxonomy. Schematic relationship between a phylogenetic tree and taxonomy.
Relationship between body size and seed size in Galapagos finch species Relationship between body size and seed size in Galapagos finch species
Jane Goodall pioneered the modern approach to studying primates in the wild, involving close-up obse Jane Goodall pioneered the modern approach to studying primates in the wild, involving close-up obse
Over Studying Over Studying
Relationship between Income per Capita and Population Growth Relationship between Income per Capita and Population Growth
Infant and Toddler Development and Responsive Program Planning: A Relationship-Based Approach Infant and Toddler Development and Responsive Program Planning: A Relationship-Based Approach
Video: Stroke volume

For a complete list of videos, visit our video library