A psychologist examines long term retention of a learned task in a sample of n = 6 rats. At 90 days of age, rats are trained on a discrimination task. Their initial performance is recorded to serve as a baseline for subsequent comparisons. Then their performance is tested four more times at 6 months, 1 year, 1 1/2 years, and 2 years of age.  The researcher wants to see if performance changes over time.  What statistical procedure would you use to analyze this data and why? Z Score Comparing X to a Sample One Way Repeated Measures ANOVA Z Score Comparing a Sample to a Population Two Way Independent Measures ANOVA Single Sample t Pearson Product Moment Correlation Independent Measures t Chi Square Goodness of Fit Repeated Measures t One Way Independent Measures ANOVA

Q: k What is the predicted time(hrs) spent by a 16-year-old'? 5 6 8 7 What age is predicted to spend…

A: For the given data select the correct choice

Q: A correlation study provides the following data: r = .66 and the study involved 92 participants What…

A: The number of participants involved are 92.

Q: Two separate samples receive two different treatments. The first treatment group (N = 15) has a mean…

A: n1=15, x¯1=50, SS1=210n2=9, x¯2=56, SS2=190

Q: Given a data point X, what does the Z-score tells us about x

A: Formula for the z-score :  Z-score = ( X-μ )/σ  μ = Mean  σ = Standard deviation  Now it is clear  :…

Q: What test I use? -Independent samples t test -ANOVA -Paired samples t test -Correlation

A: Answer: Given that, The principal of an elementary school wanted to see if there are differences in…

Q: The accompanying table summarizes successes and failures when subjects used different methods when…

A: The given P-value is 0.003. Decision rule: If P-value≤α, then reject the null hypothesis. Otherwise,…

Q: Listed below are paired data consisting of amounts spent on advertising (in millions of dollars) and…

A: The paired data consisting of amounts spent on advertising (in millions of dollars) and the profits…

Q: Over the past year, the vice president of human resources at a large medical center conducted a…

A: First we have to construct below rank table for the given data, Before After Difference…

Q: Fifty-four wild bears were​ anesthetized, and then their weights and chest sizes were measured and…

A:

Q: A group of paramedics does not believe that the mean numbers of calls received in one shift are the…

A: Given :

Q: The scatter plot for a set of X and Y values shows the data points clustered in a nearly perfect…

A: It is given that the scatterplot for a set of X and Y values show the data points clustered in a…

Q: A second study will be performed, gathering more detailed information including height and age, on a…

A: The power of the test is defined as the probability of correctly rejecting the null hypothesis.…

Q: researcher believes there is a difference in the mean number of days before visible results begin to…

A: Solution: Given information: k= 3 groups . Group 1 and Group 2 has 5 replicates or observation and…

Q: Aspirin prevents blood from clotting and helps prevent strokes. The Second European Stroke…

A: It is given that both sample sizes are 200, number of strokes for aspirin alone is 60 and number of…

Q: Provide an example of two variables that could be represented by this correlation [consider level of…

A: Given: Correlation between two variables = -0.56 It can be seen that it shows a moderate negative…

Q: A school psychologist conducted an intelligence assessment on a group of 75 children from a rural…

A: The objective is to examine the relationship between intelligence and academic performance. In the…

Q: Would a sophomore year statistics class students’ average age be a good Point Estimator(This is a…

A: Yes, as usually students in sophomore year are of certain age and the age range is not so huge,…

Q: The accompanying technology output was obtained by using the paired data consisting of foot lengths…

A:

Q: An experiment was conducted into various phobias, by the department of Psychology at Lowlands…

A: Different types of Phobia  Spiders Zombies Blood House fire Clowns Vampires…

Q: You want to compare the performance on a learning task of a group of 20 subjects who have been given…

A: Introduction: Denote μ as the true average number of correct responses by those who under Drug P.…

Q: he accompanying technology output was obtained by using the paired data consisting of foot lengths​…

A: Given: The regression equation given is shown below   Height = 64.8+5.70 Foot Length   Predicted…

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A: One possible explanation for the strong correlation between sales of ice-cream and sales of soda is…

Q: Aspirin prevents blood from clotting and helps prevent strokes. The Second European Stroke…

A: Given ,  Aspirin alone :  Sample size = n1 = 200  Number of strokes = x1= 60 Sample proportion = p^1…

Q: 15 As people age, their eyesight declines. The manager of the department of motor vehicles (DMV)…

A: The coefficient of correlation between any two variables, is a measure of association between the…

Q: Fifty-four wild bears were anesthetized, and then Correlation Results their weights and chest sizes…

A: Introduction: Denote ρ as the true correlation coefficient between chest size and weight of a bear,…

Q: A major company would like to assess the relationship between self confidence and sales levels in…

A: In this case, we will use correlation coefficient.

Q: Find the test statistic for the problem?

A: It is given that Sample size n = 450 Number of patients had a successful knee surgery operation, X =…

Q: IQ is normally distributed with a mean of 100 (SD = 15). What score would a person need to be in the…

A: Let X denote the IQ scores and it follows normal distribution with mean of 100 and standard…

Q: Researchers found a correlation coefficient of r = .50 on personality measures for identical twins.…

A: The objective of the question is to understand if the interpretation of the correlation coefficient…

Q: How Much Older Are Husbands? Exercise 2.213 introduces a dataset giving the ages of the two people…

A: 2.213

Q: the

A: Pearson's Correlation: This is a statistic used to measure the linear relationship between two…

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A: STM capacity has, population mean , m = 7 items and population sd, s = 2 items.  A random sample of…

Q: The accompanying technology output was obtained by using the paired data consisting of foot lengths​…

A: Solution: The best-predicted height for a person with a foot length of 21.4 ​cm is required. The…

Q: and after the walk she had them rate their mood on a 5-pt Likert scale from1- very bad mood to 5-…

A: Given The data is as follows Mood before Mood after 4 5 3 3 1 4 5 5 1 5 2 4 3 2…

Q: which section, verbal or quantitative, was the student's performance better? Round your answers to…

A: It is given that  For verbal GRE score: M = 152 s = 7   For quantitative score: M = 149 s = 7

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.