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Problem Seasonal ranges for brook trout were monitored on a stream outside College Station, Pennsylvania by biologists from the Pennsylvania Cooperative Fish and Wildlife Research Unit. Five trout monitored in the winter showed ranges of 8.0, 12.1, 8.1, 18.2, and 31.7. Four different trout monitored in the summer showed ranges of 102.0, 81.7, 54.7, and 50.7.
(a) Estimate the difference between the mean winter and summer ranges using a 95% confidence interval.
(b) What assumptions did you make to answer part (a)?
Choose a randomly selected vehicle, and assume the annual mileage is normally distributed with a standard deviation of 1890 miles.
A study on ethics in the workplace by the Ethics Resource Center and Kronos, Inc., revealed that 35% of employees admit to keeping quiet when they see coworker.
the population mean of monthly wages of all college graduates under age of 30. Interpret your answer in the context of the problem.
(a) Give an example where Sn converge a.s., but are not L1-bounded. (b) If |X j |≤ 2 a.s. for all j , and Sn converges a.s., show that Sn converges in L2. Hint: Use the three-series theorem (9.7.3).
If a sample of 64 fish yields a mean of 3.4 pounds, what is probability of obtaining a sample mean this large or larger?
What is the probability that a randomly selected group of 50 shoppers will spend a total of more than $5300 - Should the national brand ketchup manufacturer
Calculate the y intercept, a.- Calculate the slope, b.- Write the equation for the line.- Draw the line on an empty scatterplot, basing the line on predicted Y values for X values of 0, 1, and 18.
In parts (a) and (b), identify whether the events are disjoint, independent, or neither (events cannot be both disjoint and independent).
The researcher determines that the prevalence of generalized anxiety disorder among the participants of the study is 6.1%. Calculate the z value for the test st
A popular country singer has just released a new album. Assume that the number of album sales per day is normally distributed.
the frequencies of different blood types of 200 people who volunteered at a plasma center is given in the table.blood
An advertiser of a certain brand of aspirin (let's call it Brand B) claims that it is the preferred painkiller for headaches, on the basis of the results.
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