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Biology and Environmental Science
Lionfish are native to Indo-Pacific waters but were introduced into the Atlantic in the 1990s. These spiney fish have huge appetites, feed on native species, and have a mean length of 13.5 inches.45 Recently, invasive lionfish were found 300 feet below the water's surface off the coast of Florida. There was some speculation that these fish were larger than previously observed. A random sample of 24 lionfish was obtained near the sunken Bill Boyd cargo ship close to Fort Lauderdale, and the length of each was recorded (in inches). The summary statistics were x‾ = 16.005 and s = 4.039.
a. Is there any evidence to suggest that the true mean length of lionfish in this area near Fort Lauderdale is greater than 13.5 inches? Use a = 0.01 and assume the underlying population is normal.
b. Find bounds on the p value associated with this test.
it is found that when a particular 4-sided die is rolled a 1 occurs 26.9 of the time a 2 occurs 23.8 of the time a 3
What is the Spearman coefficient of rank correlation, what range of values can it have, and how is its numerical value interpreted?
let x be the number of trials required to obtain a success where p is the probability of success on each trial. the
Calculate the value based on this information. A new screening test for Lyme disease is developed for use in the general population. The sensitivity (ability to identify infected persons) is 60% and specificity (ability to identify non- infected p..
a. What would be the predicted score for a person scoring 6 on X? b. If someone's predicted score was 14, what was this person's score on X?
A simplified model of the control system for regulating the pupillary aperture in the human eye is shown in Figure P9.12 [20].The gain K represents the pupillary gain, and τ is the pupil time constant, which is 0.5 s. The time delay 7" is equal to..
a national caterer determined that 87 of the people who sampled their food said that it was delicious. a random sample
An absent-minded nurse is to give Mr. Brown a pill each day. The probability that the nurse forgets to administer the pill is 2/3. If he receives the pill, the probability that Mr. Brown will die is 1/3.
suppose the scores on an examination are normally distributed with a mean of 45 and a standard deviation of 8.what is
a manufacturer wants to increase the absorption capacity of a sponge. based on past data the average sponge could
the following table shows the results of recent study regarding gender of individuals and their selected field of
For a binomial probability experiment, if p is 0.1 and n is only 150, we cannot use the normal approximation to the binomial distribution without continuity correction.
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