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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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Bpringle2000 Bpringle2000
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Use the following to answer the questions below:

A random sample of 48 students at a large university reported getting an average of 7 hours of sleep on weeknights, with standard deviation 1.62 hours. A dotplot of the data is provided.
A dotplot depicts the results of the average sleep on weeknights  for 48 students. The horizontal axis is labeled, Weeknight sleep and has markings from 4.0 to 9.6 in increments of 0.8. The dots are plotted as follows: 1 dot above 4.0, 4.4, 4.7, and 4.9; 2 dots above 5.2; 3 dots above 5.3, and 5.6; 1 dot above 5.7, 5.8, 5.9, and 6.0; 2 dots above 6.2, and 6.3; 1 dot above 6.4, and 6.5; 3 dots above 6.6; 1 dot above 6.8; 2 dots above 7.2; 1 dot above 7.3; 2 dots above 7.4; 1 dot above 7.5, 7.6, 7.9, 8.0, 8.1, 8.4, 8.5,  8.6, and 9.1; 2 dots above 9.2; 1 dot above 9.4, and 9.6; 2 dots above 9.7; 1 dot above 9.8, and 9.9. There are no dots above 4.8, and 8.8. All values are approximate.


It is recommended, for most college age students, to get 8 hours of sleep each night. Does this sample provide evidence, at the 5% level, that college students at this university get significantly less sleep, on average, than what is recommended? Include all of the details of the test.
Textbook 
Statistics: Unlocking the Power of Data

Statistics: Unlocking the Power of Data


Edition: 3rd
Authors:
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ksweetksweet
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Bpringle2000 Author
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4 months ago
Thanks
alpheratz
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Yesterday
I appreciate what you did here, answered it right Smiling Face with Open Mouth
Butwhy
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2 hours ago
Brilliant ツ
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