Question

In: Statistics and Probability

8) Psychology experiments sometimes involve testing the ability of rats to navigate a maze. One researcher...

8) Psychology experiments sometimes involve testing the ability of rats to navigate a maze. One researcher needs a maze that will take rats an average of two minutes to solve. He tests several rats on a maze that he thinks will meet his needs. The data is shown below. Assume all conditions and assumptions have been met. Will this maze take the rats too little time? Use a significance level of ? = 0.05.

Time (seconds) 113.4 122.2 110.5 125.0 119.8 120.5 121.7 122.4 118.3 119.1 119.3 117.6 113.5 120.3 119.2 119.6 119.9 115.5 115.2 120.2

a) State the hypotheses in symbols. (2 points)

b) Run the test and report the test statistic and p-value. Be sure to write out what you entered in your calculator. (3 points)

c) Write a full conclusion for this test in the context of the problem. (2 points)

Solutions

Expert Solution


Related Solutions

8)Psychology experiments sometimes involve testing the ability of rats to navigate a maze. One researcher needs...
8)Psychology experiments sometimes involve testing the ability of rats to navigate a maze. One researcher needs a maze that will take rats an average of two minutes to solve. He tests several rats on a maze that he thinks will meet his needs. The data is shown below. Assume all conditions and assumptions have been met. Will this maze take the rats too little time? Use a significance level of ?=0.05. time in seconds 113.4 122.2 110.5 125.0 119.8 120.5...
in an experiment on learning 70 rats were taught to navigate a maze during a 3...
in an experiment on learning 70 rats were taught to navigate a maze during a 3 week training period. half the rats (n=35) were randomly selected to receive cocaine injections for a week while the other half received sodium placebos. after the drug treatment the rats were then tested in the maze and their response times were recorded. for rats who received cocaine the sample mean was 16.83 seconds and ss= 903.04 for the rats who received the placebo the...
Related T-Test Sample 1. A researcher is interested in testing whether rats learned a maze after...
Related T-Test Sample 1. A researcher is interested in testing whether rats learned a maze after daily training sessions. The researcher recorded the number of errors committed by each rat before any training in the maze. Then, the researcher recorded the number of errors made by each rat after training. The scores below summarize the errors by each rat before and after training. Perform a dependent-sample (repeated-measures) t-test on the scores to test whether or not the number of errors...
Maze navigation ability is an indicator of cognitive performance in rats. Consider an experiment where some...
Maze navigation ability is an indicator of cognitive performance in rats. Consider an experiment where some mice from a maze-bright strain are reared in a restricted environment (Group A) whereas others are reared in their normal environment (Group B) and answer the following questions. 1. If maze-navigation ability is only influenced by genetics, how would you expect the maze navigation performance of rats from Group A to compare with those from Group B? 2. If maze-navigation ability is affected by...
A researcher is investigating the effects of ambient noise on the ability of rats to learn...
A researcher is investigating the effects of ambient noise on the ability of rats to learn to navigate a maze. A total of 10 rats were tested, half were randomly assigned to a no noise condition and the other half assigned to a loud ambient noise condition. For each rat, the researcher determined how many trials it took to run the maze without any errors. The results are summarized in the chart below. Rat # No Noise: Score No Noise:...
Module 10: Social Psychology Choose one of the following social psychology experiments: · The Stanford Prison...
Module 10: Social Psychology Choose one of the following social psychology experiments: · The Stanford Prison Study · Sherif’s Cooperation Study · Asch’s Line Study · Milgram’s Electric Shock Study Using your chosen study, discuss why you believe the study participants behaved as they did under the various social pressures. Include in your discussion, how the various applicable principles of Social Psychology learned in this Module apply to your chosen study and discussion. In this discussion, you should be able...
Scientist were testing how fast (seconds) 2 types of rats could race 5 m down one...
Scientist were testing how fast (seconds) 2 types of rats could race 5 m down one section of the brand-new shiny hallways of the new Biological sciences building at SHSU. However, these scientists are a bit stuck as the samples have clearly not been sampled from a normal distribution.  Could you help them out with their statistics by running an appropriate t-test to see if Rat A was slower than Rat B? Course times (seconds) for Rat A: 6.43 6.99 6.43...
QUESTION 4 In which case would testing the null hypothesis not involve a one-tailed statistical test?...
QUESTION 4 In which case would testing the null hypothesis not involve a one-tailed statistical test? PLEASE PROVIDE BRIEF EXPLANATION! H1: Incentive pay for teachers does affect student achievement H1: Higher sales tax rates does not reduce state tax revenues H1: Extending the duration of unemployment benefits does not increase the length of joblessness H1: Smoking does not reduce life expectancy
Navigate to the Discussion page and answer one side of one of the selected debates. Debate 7-1: Usefulness of the Statement of Cash Flows versus the Income Statement Debate 8-3: Capitalization versus Expense
Navigate to the Discussion page and answer one side of one of the selected debates.Debate 7-1: Usefulness of the Statement of Cash Flows versus the Income StatementDebate 8-3: Capitalization versus Expense
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT