# statistics

in a classic study of problem solving, katona demonstrated that people whoa re required to figure out a problem on their own will learn more than people who are given the solution. One group of participants is presented with a series of problems that hey must figure out. second group sees the same problems but gets an explanation of the solutions. Later both groups are given a new set of similar problems and their problem-solving scores are as follows:

On their own
n=10
M=78
SS=1420

Given Solutions
n=15
M=66
SS=2030

ss stands for sum of squares

1. 👍
2. 👎
3. 👁
1. To find the significance of the difference between two means, we need to divide this difference by the standard error of the difference between means.

To find the standard error of the difference between means, we need to know the standard deviation (SD) of both groups.

To get the standard SD, you need both sum of squares (ΣX^2) and the sum of the scores squared ([ΣX]^2). You only give me one of these terms.

I hope this helps. Thanks for asking.

1. 👍
2. 👎

## Similar Questions

1. ### Education Tech

1.) Which of the following is the best strategy for studying test? a) Sitting alone in a chair in a quiet room, looking over your textbook. b) Working in pairs and exchanging practice questions. c) Developing a personal method

2. ### Career planning

Which of the following is an effective first reaction to a problem . A. Asking questions to help you understand the problem B. Deciding on a solution as quickly as possiable C. Finding someone else to handle the problem D.

3. ### math

As of July 2004, the population of the United States was 293,027,571. If more than half of these people live within 80 kilometers of an ocean, about how many people live within distance? I guess I have to look to find the

4. ### English

1. To come up with possible solutions to a problem is referred to as: A. decision making. B. concept mapping. C. critical thinking. D. problem solving. is it D 2. "Should I apply for a job or go for an internship?" is an example

1. ### Math

The basic recipe for split pea soup serves 8 people. Find the amount of each ingredient needed to serve 32 people. 2 1/4 cup of dried split peas 2 quarts of water 3/4 cup of chopped onions 1 cup chopped celery 2 pound ham shank

2. ### Science

1. Which of the following best explains what an Engineer does? A- An engineer combines the knowledge with problem-solving skills to design better mathematical models. B-An engineer combines the knowledge with problem-solving

3. ### statistics

Oxytocin is a naturally occurring brain chemical that is nicknamed the “love hormone” because it seems to play a role in the formation of social relationships such as mating pairs and parent-child bonding. A recent study

4. ### Algebra 2

It takes 12 hours for 8 people to paint a house. How long will it take 3 people to do the job? I'm not really sure how to go about solving this problem.

1. ### history

1. Free elections in Poland: A. were not very significant B. demonstrated clearly that the Cold War was ending. C. showed that Solidarity was not really all that influential and that people would not turn their back on Communist

2. ### English

Whoa! I didn't expect you to be right there! Which of the following is the preposition in the sentence. A) Whoa B) expect* C) didn't D) there

3. ### chemistry

A mixture of Ar and N2 gases has a density of 1.361 g/L at STP. What is the mole fraction of each gas? not sure on really where to start Work this as the classic mixture: the mass of 22.4 liters of the gas is 1.361*22.4 grams.

4. ### English/Psychology

I need someone to proofread this and give me some suggestions on this paper? Do the following: "A Plan of Action". How can the A Plan of Action help you address a current problem or challenge you are having with school?” My