Author Question: A random sample of 61 fifth-grade students was selected and given the Stanford-Binet IQ test. The ... (Read 76 times)

berenicecastro

  • Hero Member
  • *****
  • Posts: 581
A random sample of 61 fifth-grade students was selected and given the Stanford-Binet IQ test. The mean score for the sample was 97, with an estimated standard error of the mean of 2.43.
 
  Estimate whether the sample mean could be representative of a population whose mean is 100.
 
 
 What will be an ideal response?

Question 2

A random sample of 30 infants (age 12 months) was selected and given a Motoric Development test. The mean score for the sample was at the 13.20 month level. The
  estimated standard error of the mean was 1.25.
 
  Estimate whether the mean test age of the sample could be representative of a population whose mean test age is 12 months.
 
 
 What will be an ideal response?



nikmaaacs

  • Sr. Member
  • ****
  • Posts: 335
Answer to Question 1

t=-1.235 Fail to reject

Answer to Question 2

t=.960, Fail to reject



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

In 1864, the first barbiturate (barbituric acid) was synthesized.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

Everyone has one nostril that is larger than the other.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

For a complete list of videos, visit our video library