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It is reported that 25 percent of American households use a cell phone exclusively for their telephone services. In a sample of 11 households, find the probability that:
a. None use a cell phone exclusively
b. At least one uses a cell phone exclusively
c. At least five use a cell phone exclusively
frans convenience marts are located throughout a metropolitan area. fran the owner would like to expand into other
Assuming that the dogs did better than what would be expected with random guessing, did they do well enough to be used for actual medical diagnoses? Why or why not?
The statistical research was done primarily through the internet from governmental regulated sources. Estimates were used in consideration of absence of actual information.
To evaluate the effect of a treatment , a sample of n=9 is obtained from a population with a mean of m=40 and the treatment is administered to the individuals is found to be M-33
What is the probability that all three lines experience a surface finish problem between 20 and 40 hours of operation? Why is the joint probability density function not needed to answer the previous questions?
What information is obtained from measurements on an interval scale compared to measurements on an ordinal scale. What information is obtained from measurements on a ratio scale compared to measurements on an interval scale?
consider the continuous triangular distribution yx4.5 where 0ltxlt3. a what is the probability of 0ltxlt3? b what is
Without using formulas, explain the meaning of (a) expected value of a random variable; (b) actuarial fairness; and (c) variance of a random variable.
What is the minimum-cost order quantity for the shoes? What are the annual savings of your inventory policy over the policy currently being used by Keith?
Assume the probability that a person has the desease is 0.03 for all people, independently of each other, and compute the expected number of tests necessary for each group.
A firm plans to hire 100 employees during the year. It expects that 25 of these employees will obtain graduate degrees within the next 5 years of being hired. In addition, 35 employees will leave the firm within 5 years.
x and y are independent. both x and y have an exponential distribution. if x had mean 3 and y had mean -2a find the
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