statistics

posted by .

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

• statistics -

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.

Similar Questions

1. Math

I fell asleep trying to figure this one out ... if you could help I would appreciate it ... Here is the problem .. If Jon, Mac, and Heather are taking a group photo, how many different ways can the photographer line them up?
2. 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 demonstrated …
3. statistics

a sample of 120 men and women randomly divided into 3 groups with 40 people per group. group 1 members varied their workouts. group 2 performed the same exercise at each workout. group 3 had no set schedule or regulations for their …
4. Psychology

The research of Solomon Asch revealed that: a.participants in the study conformed to the erroneous group response in one-half of the trails. b.all participants in the study conformed to the erroneous group response in each trail. c.participants …
5. psychology

the research of solomon asch revealed that: A. participants in the study conformed to the erroneous group respose in one-half of the trials. B. All participants in the study conformed to the erroneous group response in each trial. …
6. Problem solving

A group of 52 people attendance ball game. There are three times as many children as adults in the group. Write a system of equations that you can use to solve this problem where a is the number amd C is the number of children in the …
7. Child development

Compared to adults, when children perform complex tasks they a.use less working memory. b.are likely to perform fewer processes automatically. c.are unlikely to exceed the capacity of their working memory. d.use more sensory memory. …
8. science

left-handed people demonstrated greater brain activity than right-handed people when under the influence of drugs. This statement should be classified as 1 the problem =the main issue or subject being investigated in the study 2 a …
9. Algebra

Problem: The rock group Loco Moco was scheduled for a concert at the Blaisdell Concert Hall. Because it was the concert highlight of the year, there was excitement in the air and people were eager to get tickets, which could only be …