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Biology and Environmental Science
A special water channel is being constructed, connected to the Campbell River in British Columbia, to provide more area for chinook salmon spawning. The plans call for the channel to be 23 meters wide. Following completion, a random sample of 18 locations along the channel was selected, and the width at each location was measured. The sample mean was x‾ = 24.6 meters. Assume the distribution of channel widths is normal and σ = 2.28 meters.
a. Is there any evidence to suggest the mean width of the channel is greater than 23 meters? Use a = 0.01.
b. Find the p value associated with this hypothesis test.
An auditor reviewed 25 oral surgery insurance claims from a particular surgical office, determining that the mean out-of-pocket patient billing above the reimbursed amount was $275.66 with a standard deviation of $78.11.
Create an example of an application oriented binomial experiment. You are to give the scenario which should include an "n" and "p".
Use a computer to simulate the numbers drawn for the Cash 5 lottery game 1000 times, and draw a histogram for the values of H = highest number drawn. Compare your histogram to the one shown in given Figure.
2) Two independent observations are made of a random variable having pmf - f(x) = x/10, x= 1 , 2 , 3 , 4. Determine the probability that BOTH observations are greater than 2.5
Show that maximizing expression (Eq. 8.37) yields the normal equations (Eq. 8.38),
find the 95 confidence interval for the standard deviation of birth weights at county general hospital if the standard
List 4 variables that you might assess in a research project related to your research area. List one for each type of measurement scale: Nominal, ordinal, interval, and ratio
You are to gather a systematic sample from a local phone book with 75,000 names. If every kth name in the phone book is to be selected, what value of k would you choose to gather a sample size of 500?
Determine whether the following are demonstrative definitions, enumerative definitions, definitions by subclass, synonymous definitions,or etymological definitions.- "Professional person" means a person such as a doctor, a lawyer, a professor, or a..
The mean salary for engineers with less than 5 years' experience is $60,000 with a standard deviation of $5,000. Compute the z values for both Rob and Rachel.
a large population is known to have a mean of 11500 and a standard deviation of 2750. if all possible samples of size
What is the probability that one of these resistors picked at random will have a resistance between 13.06 ohms and 15.06 ohms, inclusive?
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