In the Northern Hemisphere, dolphins swim predominantly in a counterclockwise direction while sleeping. A group of researchers
Question:
In the Northern Hemisphere, dolphins swim predominantly in a counterclockwise direction while sleeping. A group of researchers wanted to know whether the opposite was true for dolphins in the Southern Hemisphere (Stafne and Manger 2004). They watched eight sleeping dolphins and recorded the percentage of time that the dolphins swam clockwise. Assume that this is a random sample and that this variable has a normal distribution in the population. These data are as follows:
a. What is the mean percentage of clockwise swimming for Southern Hemisphere dolphins?
b. What is the 95% confidence interval for the mean time swimming clockwise in the Southern Hemisphere dolphins?
c. What is the 99% confidence interval for the mean time swimming clockwise in the Southern Hemisphere dolphins?
d. What is the best estimate of the standard deviation of the percentage of clockwise swimming?
e. What is the median of the percentage of clockwise swimming?
Step by Step Answer:
a To find the mean percentage of clockwise swimming for Southern Hemisphere dolphins we sum up all the recorded percentages and divide by the total nu...View the full answer
The Analysis Of Biological Data
ISBN: 9781319226237
3rd Edition
Authors: Michael C. Whitlock, Dolph Schluter
