« previous next »

Author Question: For testing the difference between two population proportions, the pooled proportion estimate is ... (Read 115 times)

big1devin

  • Hero Member
  • *****
  • Posts: 583
on: Jun 24, 2018
For testing the difference between two population proportions, the pooled proportion estimate is found by taking:
 a. the proportion of successes from sample 1 plus the proportion of successes from sample 2.
  b. the total number of successes in both samples divided by the total of both sample sizes.
  c. the difference between the proportion of successes in each sample.
  d. None of these choices.

Question 2

Which of the following will be reflected by deseasonalized time series?
 a. Trend effects
  b. Cyclical effects
  c. Random variation
  d. All of these choices are true.


amcvicar

  • Sr. Member
  • ****
  • Posts: 341
Reply #1 on: Jun 24, 2018
Answer to Question 1

B

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Medication errors are three times higher among children and infants than with adults.

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?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

In Eastern Europe and Russia, interferon is administered intranasally in varied doses for the common cold and influenza. It is claimed that this treatment can lower the risk of infection by as much as 60–70%.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Interaction web of factors that might influence locust population size. Interaction web of factors that might influence locust population size.
Proportions of the genetic and physical maps are similar but not identical Proportions of the genetic and physical maps are similar but not identical
World population density World population density
The relationship between allelic frequency and genotypic frequency in a population that is in Hardy- The relationship between allelic frequency and genotypic frequency in a population that is in Hardy-
Human Population Growth Human Population Growth
Demographic transition model for changes in population growth rates and sizes, correlated with long- Demographic transition model for changes in population growth rates and sizes, correlated with long-
Video: Structure of a Ribosome

For a complete list of videos, visit our video library