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

Author Question: A population has a mean of 100 and a standard deviation of 15. If samples of size N= 25 are ... (Read 88 times)

RYAN BANYAN

  • Hero Member
  • *****
  • Posts: 563
on: Jun 20, 2018
A population has a mean of 100 and a standard deviation of 15. If samples of size N= 25
  are randomly drawn from this population, then what proportion of sample means will fall
  between 97 to 103?
 
  a. .6826
  b. .3413
  c. .5000
  d. .9544

Question 2

Assume that intelligence test scores are approximately normally distributed with a mean
  of 100 and a standard deviation of 16. Thus, about _____ percent of the people have IQ
  scores _____ .
 
  a. 50; between 100 and 116
  b. 50; higher than 116
   c. 68; between 84 and 116
  d. 34; lower than 100


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

TheDev123

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jun 20, 2018
Answer to Question 1

A

Answer to Question 2

C


RYAN BANYAN

  • Member
  • Posts: 563
Reply 2 on: Jun 20, 2018
:D TYSM

Sarahjh

  • Member
  • Posts: 370
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Exponential growth in the Canadian migratory population of the whooping crane after 70 years of cons Exponential growth in the Canadian migratory population of the whooping crane after 70 years of cons
Sources of income for U.S. population aged 65 and over. Sources of income for U.S. population aged 65 and over.
Projections of the Racial-Ethnic Makeup of the U.S. Population Projections of the Racial-Ethnic Makeup of the U.S. Population
Size of Particles Size of Particles
Human population growth, 1700 - present Human population growth, 1700 - present
Video: Anatomy and Chemical Makeup of a Single Hair (Animation)

For a complete list of videos, visit our video library