A developmental psychologist prepares a video tape which demonstrates the “conservation of matter”. She selects 8...

A developmental psychologist prepares a video tape which demonstrates the “conservation of matter”. She selects 8 young children from a day care and first tests them on this type of problem (that matter is the same volume regardless of shape) and records the number of correct responses. She then shows the video tape and re-measures their ability to solve these problems. Below are the results:
# correct           # correct
Child       before tape           after tape
1       3               8
2       0               6
3       6               4
4       2               8
5       9               10
6       8               6
7       6               2
8       5               10

State the independent and dependent variables.
State the Null Hypothesis in words and symbols
Compute the appropriate statistic
What is the decision?
State the Full conclusion in words.

Solutions

Expert Solution

orchestra answered 1 year ago

Next > < Previous

Related Solutions

3. A psychologist is interested in the effects of social pressure. She selects a group of...

3. A psychologist is interested in the effects of social pressure. She selects a group of 10 male subjects at random from her introductory psychology course. Each subject is asked to estimate by eye the length of a stick under two conditions. In one condition, the subject is placed in the presence of four other persons who, unknown to him, have been instructed to give estimates that are too large. Each of these persons...

Two-way ANOVA (8 pts) Research Scenario: A developmental psychologist is looking into the effects of play...

Two-way ANOVA (8 pts) Research Scenario: A developmental psychologist is looking into the effects of play group size on empathy and whether this differs by age. She has two age groups – four year olds and eight year olds. Each of those age groups is split into three separate groups for an entire semester during structured free time: play alone (n = 8 per age group), dyads (n = 8 per age group), or groups of 4 (n = 8...

Consider a game in which, simultaneously, player 1 selects a number x ∈ [0, 8] and...

Consider a game in which, simultaneously, player 1 selects a number x ∈ [0, 8] and player 2 selects a number y ∈ [0, 8]. The payoffs are given by: u1(x, y) = 2xy − 8x − x 2 u2(x, y) = 4xy − y 2 (a) Calculate and graph the best responses for each player. (b) What strategies are never played? (c) Find all Nash equilibriums? (d) What is the preferred equilibrium in society? (e) How would we classify...

A psychologist is studying smokers' self-images, which she measures by the self-image (SI) score from a...

A psychologist is studying smokers' self-images, which she measures by the self-image (SI) score from a personality inventory. For adults in the U.S., the mean SI score from this inventory is about 145 . The psychologist gathers a random sample of 17 SI scores of smokers and finds that their mean is 126 and their standard deviation is 34 . Assume that the population of SI scores of smokers is normally distributed with mean μ . Based on the sample,...

2. Kitty, who is single, sells her principal residence, which she has owned and occupied for 8...

2. Kitty, who is single, sells her principal residence, which she has owned and occupied for 8 years, for $375,000. The adjusted basis is $64,000 and selling expenses are $22,000. She purchases another principal residence three months later for $200,000. a. What is Kitty’s recognized gain/loss, if any, on the sale of her old principal residence? b. What is Kitty’s basis in her new principal residence?

Nov. 8 Natalie cashes her U.S. Savings Bonds and receives $520, which she deposits in her...

Nov. 8 Natalie cashes her U.S. Savings Bonds and receives $520, which she deposits in her personal bank account. 8 She opens a bank account under the name “Cookie Creations” and transfers $500 from her personal account to the new account. 11 Natalie pays $65 for advertising. 13 She buys baking supplies, such as flour, sugar, butter, and chocolate chips, for $125 cash. (Hint: Use Supplies account.) 14 Natalie starts to gather some baking equipment to take with her when...

Subjects