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In a survey of a rare clumped species, the study area is divided into two strata, with N1 = 60 units in the first stratum and N2 = 50 units in the other. Initial simple random samples of sizes n1 = 3 and n2 = 2 are used. Whenever one or more of the animals are found, adjacent units are added as in text examples. In stratum 1, the first initial sample unit had one animal in it; no further animals were found in adjacent units. The second sample unit had no animals. The third sample unit had two animals; of the adjacent units added within that stratum, the only one with animals had three. That unit was adjacent to the stratum boundary, so adding its adjacent units resulted in crossing the stratum boundary and discovering three more units, with two, one, and one animals,
respectively. The two initial units selected in stratum 2 each had no animals. Estimate the number of animals in the study region using ˆμ0 and ˆμ1. Estimate the variance of the estimator.
Using the appropriate formula for grouped data, calculate the mean number of hours in downtime. Using the appropriate formulas for grouped data, calculate the variance and the standard deviation.
a) Conduct a Chi-Square Test for Goodness of Fit. (Use a .05 significance level and make sure you show all 5 steps of the hypothesis test) b) Use the results of the Chi-Square test to describe the appeal of the food rewards.
What is the theoretical probability that Mr. Nerdly assigns 10 homework problems as a result of a randomly selected student playing the birthday game?
1. The Inn at Columbia has 150 rooms with standard queen-size beds and two two rates: a full price of $200 and a discount price of $120. To receive the discount price, a customer must purchase the room at least two weeks in advance (this helps to ..
If the value of the standard normal random variable Z is positive, then the original score is where in relationship to the mean?
Determine probability, P(Z
what percentile is associated with a t score of 39? how do you work it
An insurance company states that 90% of its claims are settled within 5 weeks. A consumer group selected a random sample of 100 of the company's claims and found 75 of the claims were settled within 5 weeks.
In a group of 6 computer programmers, what is the probability that none are introverts? What is the probability that 4 or more are introverts?
Previously, it was shown that if X and Y are independent random variables, then τ (8.2) has a value of 0. Show that the converse is not true by constructing a joint probability distribution for the pair of random variables X and Y such that τ = 0 ..
What is the relationship between confidence intervals and hypothesis testing? How are they the same? How are they different?
A consumer products testing group is evaluating two competing brands of tires, Brand 1 and Brand 2. Tread wear can vary considerably depending on the type of car
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