« previous next »

Author Question: The standard deviation of the population of individual Digit Span scores is 3.00. (The Digit Span ... (Read 86 times)

casperchen82

  • Hero Member
  • *****
  • Posts: 540
on: Jun 20, 2018
The standard deviation of the population of individual Digit Span scores is 3.00. (The Digit Span test is a sub-test of the Wechsler IQ test). A random
  sample of 20 subjects yielded a mean Digit Span score of 7.25.
 
  a. Calculate the standard error of the mean.
  b. Test the hypothesis, using the z test, that the sample could be
  representative of a population whose mean is known to be 10.00.

Question 2

Percentage of scores falling above a z of -.67
 
  What will be an ideal response?


srodz

  • Sr. Member
  • ****
  • Posts: 333
Reply #1 on: Jun 20, 2018
Answer to Question 1

a SEm= .67

Answer to Question 2

74.86


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Though methadone is often used to treat dependency on other opioids, the drug itself can be abused. Crushing or snorting methadone can achieve the opiate "rush" desired by addicts. Improper use such as these can lead to a dangerous dependency on methadone. This drug now accounts for nearly one-third of opioid-related deaths.

Did you know?

Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.

Three ways that factors affect mortality in response to changes in population density. Three ways that factors affect mortality in response to changes in population density.
Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater, Details of plant population biology from repeat photography: (a) saguaro cactus in MacDougal Crater,
On March 25, 1911, as scores of young factory girls leaped to their deaths from the eighth, ninth, a On March 25, 1911, as scores of young factory girls leaped to their deaths from the eighth, ninth, a
How to manually find the mean, variance, and standard deviation for a set of numbers How to manually find the mean, variance, and standard deviation for a set of numbers
. In which distribution is the mean more “typical” of all scores? . In which distribution is the mean more “typical” of all scores?
Overweight individual with acanthosis nigricans Overweight individual with acanthosis nigricans
Video: Neural regulation of mechanical digestion- CNS voluntary, ANS & ENS controlled involuntary movements

For a complete list of videos, visit our video library