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The use of plant appearance in prospecting for ore deposits is called geobotanical prospecting. One indicator of copper is a small mint with a mauve-colored flower. Suppose that, for a given region, there is a 30% chance that the soil has a high copper content and a 23% chance that the mint will be present there. If the copper content is high, there is a 70% chance that the mint will be present.
(a) Find the probability that the copper content will be high and the mint will be present.
(b) Find the probability that the copper content will be high given that the mint is present.
(c) Are the events A1: the mint is present, and A2: the soil has a high copper content independent?
Compare the two servers with respect to the approximate centers (locations) of their tip percentage.- Compare the two servers with respect to the variation (spread) among tip percentages.
How does a multiple base line design differ from a reversal design and give three reason a researcher might chose to use a single case design?
At the end of the study there was a statistically significant difference in average weight loss for the two groups. What additional information would you need in order to determine if the difference in average weight loss had practical importance?
Discuss the profitability situation of the facility per patient. What is the lost opportunity cost by failing to treat patients within three days? What should it do to improve?
Calculation of Standard Deviation and Variance
An urn contains four red balls and four white balls. An experiment consists of selecting at random a sample of four balls and recording the number of red balls in the sample. Set up the probability distribution and compute its mean and variance.
Let Y and N stand for a Yes and No response, respectively. List the first several outcomes in the sample space
Let random variable X represent number of heads on first toss and y total number of heads from three tosses. Sketch tree view with X as first level and Y/X as second level and determine conditional probability p(Y=2/X=1).
Fill in the P (X=x) values in the table to give legitimate probability distribution for the discrete random variable X, whose possible values are -4, 1,2,3 and 6.
NURS 371 Homework: Probability and Normal Distribution. What two scores would divide a normal distribution such that approximately 68% of the general population
Probability about 0.2 of suggesting that the person is deceptive. What is the probability that the number classified as deceptive is less than the mean?
a. What is the smallest possible y value, and what experimental outcome gives this y value? What is the second smallest y value, and what outcome gives rise to it? b. What is the set of all possible y values?
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