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About 78?% of all female heart transplant patients will survive for at least 3 years. Eighty female heart transplant patients are randomly selected. What is the probability that the sample proportion surviving for at least 3 years will be less than 70?%? Assume the sampling distribution of sample proportions is a normal distribution. The mean of the sample proportion is equal to the population proportion and the standard deviation is equal to square root pq/n.
A state education agency designs and administers high school proficiency exams. Historically, time to complete the exam was an average of 120 minutes.
If the bond had 15 years to maturity when you originally purchased it, what was your total return for the past year? Assume semiannual compounding.
Flaws occur in the interior of plastic used for automobiles according to a Poisson distribution with a mean of 0.02 flaws per panel. If 50 panels are inspected, what is the probability that the number of panels that have one or more flaws is less ..
A company is thinking about launching product. The table below shows the analyst conclusions with respect to the demand and return for the company on the product. Calculate the standard deviation. Show all work
a. Clearly state what the random variable in this problem is? b. What is an appropriate distribution to be used for this problem and why?
Assume that the event "Mary takes Mathematics 23 and Government 35" is more likely than the event "Mary takes Mathematics 23." Why are we not making this fallacy here?
Given that at least one of the components has failed, what is the probability that at least two of the components have failed?
What is the probability that a randomly selected tennis ball will meet ITF diameter specifications - What is the probability that exactly one will not meet ITF
?A political candidate has asked you to conduct a poll to determine what percentage of people support her.
Describe how each of these analyses can be used to untangle the direction of the relationships among correlated variables.
A particle P of mass 3m is suspended from a fixed point O by a light inextensible string of length a.- Find the normal frequencies and the forms of the normal modes for this system.
a. Interpret b1 and b2 in this estimated regression equation b. Predict y when X1 = 60 and X2 = 50. c. Compute R-square and Adjusted R-Square.
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