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Every year on Earth Day, a group of volunteers pick up the garbage at Hidden Falls Park. The time it takes to clean the beach varies inversely with the number of people picking up garbage. last year , 33 volunteers took 7 hours to clean the park. IF 57 volunteers come to pick up garbage this year how long will it take to clean the park?
use multiple regression to find the line of best fit through the following data. what does this tell
The service call can take 1, 2, 3, or 4 hours. The different types of malfunction occur at about the same frequency. Develop a probability distribution for the duration of a service call.
using probability how can you use probability to improve your chances of winning at a casino. provide specific examples
There are 2 parts to the assignment. Note that part two is asking for six sources to be reviewed. Please place both assignments into one paper. The different questions should be clearly marked so your professor knows which question you are addres..
Let X1, ... , Xn be i.i.d. r.v.'s with (?nite) unknown mean m and (?nite) known variance s 2, and suppose thatn is large. i) Use the CLT to construct a con?dence interval for m with approximate con?dence coef?cient 1 - a;
If the decision maker knows nothing about the probabilities of the three states of nature, what is the recommended decision using the optimistic, conservative and minimax regret approaches?
Recognize and describe potential threats (up to 3) to internal validity.
Show that it is an unbiased estimator of the variance of X1 but that its variance is larger than that of s2, at least when the i.i.d. Xi have a normal distribution. Hint: If X has a standard normal N (0, 1) distribution, then EX 3 = 0 and EX 4 = 3..
Average of this group is 229. Population standard deviation for both groups is 6. At α = 0.01, is there difference in cholesterol levels between two groups?
let z be a standard normal random variable. use the calculator provided to determine the value of c such that p-c lt z
the number of items sold by freds candy store for 2004 and 2007 and the store prices for the two periods
What would be the critical value under the null hypothesis if the size of your test were 5%?
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