Question

Psychology experiments sometimes involve testing the ability of rats to navigate mazes. The mazes are classified according to difficulty, as measured by the mean length of time it takes rats to find the food at the end. One researcher needs a maze that will take rats an average of about one minute to solve. He tests one maze on several rats, collecting the data saved as: Time (sec) 52.8 60.1 55.1 57.6 55.5 49.5 40.9 44.3 150 38.4 46.2 62.5 38 62.8 33.9 50.4 35 47.9 69.2 46.2 56.3 27.9 79.2 36.2 46.3 a) Create a boxplot of the data. Are any of the observations outliers? b) Find a 95% confidence interval for the true mean completion time for this maze. c) Do you think this maze meets the "one-minute average" requirement? Explain. d) Eliminate the outlier and find a 95% confidence interval for the true mean completion time for this maze without the outlier. e) Do you think this maze meets the "one-minute average" requirement? Explain.

Name: psychology experiments sometimes involve testing the ability of rats to navigate mazes the mazes are classified according to difficulty as measured by the mean length of time it takes rats t 91646
Uploaded: 2023-07-23T09:19:02-08:00
Duration: 27 s
Channel: Numerade
Description: psychology experiments sometimes involve testing the ability of rats to navigate mazes the mazes are classified according to difficulty as measured by the mean length of time it takes rats t 91646

          Psychology experiments sometimes involve testing the ability of rats to navigate mazes. The mazes are classified according to difficulty, as measured by the mean length of time it takes rats to find the food at the end. One researcher needs a maze that will take rats an average of about one minute to solve. He tests one maze on several rats, collecting the data saved as:

Time (sec)
52.8
60.1
55.1
57.6
55.5
49.5
40.9
44.3
150
38.4
46.2
62.5
38
62.8
33.9
50.4
35
47.9
69.2
46.2
56.3
27.9
79.2
36.2
46.3

a) Create a boxplot of the data. Are any of the observations outliers?
b) Find a 95% confidence interval for the true mean completion time for this maze.
c) Do you think this maze meets the "one-minute average" requirement? Explain.
d) Eliminate the outlier and find a 95% confidence interval for the true mean completion time for this maze without the outlier.
e) Do you think this maze meets the "one-minute average" requirement? Explain.

psychology experiments sometimes involve testing the ability of rats to navigate mazes the mazes are classified according to difficulty as measured by the mean length of time it takes rats t 91646

Added by Gary C.

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