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Use the following information to answer the three items below:
In a certain large forest, 25% of all the beech trees show damage by a certain parasitic fungus. A random sample of 20 beech trees are selected, then:
a.) What is the probability that exactly half of the beech trees in the sample will be so damaged?
b.) What is the probability that two or more beech trees in the sample will be so damaged?
c.) What number of damaged beech trees will have the greatest probability of occuring?
1. determine if this is an example of probability or statistics the average cost of groceries has risen by 4.2 in the
Their monitoring plan will take a random sample of 5 days sales per month and use the sample mean sales to identify shops that are under-performing. Establish the lower limit sales such that only 5% of the shops would have a sample sales mean belo..
question 1.the average annual salary for all u.s. teachers is 29863. assume that the distribution is normal and the
Findout either the given correlation is significant at given level of significance. Illustrate what does sample size have to do with the significance of r.
1.there are two statistics classes. the first has 250 students and the second has 200 students. in the first class the
The post anesthesia care area (recovery room) at St. Luke's Hospital in Maumee, Ohio was recently enlarged. The hope was that with the enlargement the mean number of patients per day would be more than 25.
a division within a transportation company is responsible for performing maintenance on the fleet of trucks used by the
Find the critical value(s). (e) Based on your answers for parts (a) to (d), will you reject or fail to reject the null hypothesis? State your conclusion in the context of the application.
At the .01 significance level, is there a difference in the use of the four entrances?
A bag contains five purple ("P") blocks and one yellow ("Y") blocks. Without looking into the bag you reach in, take out a block, return the block to the bag, and then repeat the same process a number of times. Which of the following sequences of ..
Estimate the number of workers in the sample who are union members by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable). Do not round your response.
Solution to managerian stastics question. suppose that a consultant for the supermarket counts the number of arrival per hour during a sample of 150 hour.
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