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A doctor prescribed the drug penicillin to three different patients as a form oLtreatment for an infectious disease. It is known from the general population that 20 out of every 100 individuals are allergic to the drug.
a) What is the probability that all three patients are allergic to the drug?
b) What is The probability that at least one of the patients is not allergic to the drug?
Suppose that the service rate to a waiting line system is 10 customers per hour (exponentially distributed).
For the sheet-metal stamping machine in certain factory, the time between failures, X1 has a mean between the failures, of 56 hours and a variance of 16 hours.
Which is the estimated or dear proportion of defective cups in the population?
Find out the probability that temperature of oven will range from 460 to 470 F?
The main purpose of this exercise is to check your understanding of significance level, p-values and power .
Is it reasonable for the manufacturer to claim that the drill bits will last 2.5 hours?
What signified to you on all of the problems that required a binomial distribution that you were to use a binomial distribution? Which problems required a binomial distribution?
A vertical line is drawn through a normal distribution at z = -0.25, and separates the distribution into two sections. What proportion of the distribution is in the larger section?
This distribution is positively skewed. The standard deviation of the population is not known.
The managers of a brokerage firm are interested in finding out if the number of clients a broker brings into the firm affects the sales generated by the broker.
Find out the probability that the return for common stocks will be more than 0%.
Identify your research question, your research (alternative) hypothesis, and your null hypothesis. Also, identify your independent and dependent variable.
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