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An ethologist is interested in how long it takes a certain species of water shrew to catch its prey. He only has access to a sample of 100 shrews. On multiple occasions each day he lets a dragonfly loose inside the cage of the shrews and times how long it takes until the shrews catch the dragonfly. After months of research the ethologist concludes 1) that the mean prey catching time was 30 seconds, 2) the standard deviation was 5.5 seconds and 3) that the scores he has collected are normally distributed.
What is the percentage of shrews that catch a dragonfly in between 25 and 45 seconds
Of the 500 students who responded to a survey about recycling on campus, 350 said they recycle on a regular basis. The sample proportion is ??
general population is skewed to the right the meand degree of affection is 60 standard deviation is 16. sample 100
Assuming a population standard deviation of 10.0 minutes and a simple random sample of 30 newspaper readers in the 65-or-over age group, what is the probability that members of this group will average at least 35 minutes reading their next newspap..
Briefly discuss each of the elements of time and territory management and indicate how these seven elements relate to one another.
Suppose 94 percent of the items have lives exceeding 2000 h and 3.51 percent have lives exceeding 16,240 h. Find the mean and standard deviation of the service life.
Find a 90% confidence interval for p. (Round your answers to three decimal places.) lower limit
Two weight-training regimens designed to improve arm strength will be compared. The response variable will be the improvement in arm strength at the end of six.
Arrows. An Olympic archer is able to hit the bull s-eye 80% of the time. Assume each shot is independent of the others.
In the application of the recursion principle 1.3.2 in the proof that WO implies HMP, how should g be defined? Show that the resulting argument does prove that WO implies HMP.
For a normal random variable X with mean 70 and standard deviation 10. Calculate the probability that 60 80}.
Can you please make up your own normal distribution problem and find the area ( probability) between two independent variables. 2).
Reading highway signs is not always easy, especially if your vision is imperfect. Vision in general tends to deteriorate with age. Two researchers conducted a study to determine if the distance at which a standard highway sign could be recognized ..
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