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In your words, demonstrate your understanding on the following concepts:
a) Survival analysis
b) Life table
c) Kaplan-Meier curve
d) Logrank test
e) Negative exponential survival distribution
f) Cox proportional hazards modelling
Determine the probability 3 or more of these vehicles require warranty service.
good portfolio managers beat the benchmark in 80 of the years. mediocre portfolio managers beat the benchmark in 40 of
The sum of the cross-products of Z scores gives you a large positive number if there is a positive correlation and a large negative number if there is a negative correlation.
Below are revenue and profit (both in $ billions) for nine large entertainment companies.
Iif we want to be 90% confident that the sample percentage is within (+/-) 3 % of the actual percentage of the accidents covered by the insurance company?
What is the probability that 6 or more claims are made by males under 25? (C) What is the expected number of claims made by males under 25? What is the standard deviation of the distribution?
An obsolete 2400 bps modem uses QAM (see Problem 8.3.4) to transmit one of 16 symbols, s0,...,s15, every 1/600 seconds. When signal si is transmitted, the receiver output is
Determine the average cost of OTC cough medicines per doctor's office visit based on 30 million purchases.
a banking consultant is investigating if the proportion of households with saving above 20000 has increased from last
Suppose that in the queueing system M/M/2/c, with c = 3, server no. 1 serves only one person at a time, at rate μ1, while server no. 2 can serve one or two persons at a time, from any time instant, at rate 𝜇2 Moreover, when server no. 1 is..
The advantage of packet switching vs. circuit switching. The following figure shows that many users are sharing a 4Mbps access link to the Internet. Suppose each user is either in active status that required data access rate of 100k Bytes/second, ..
What are the characteristics of standard normal distribution? The HR department of an organization collects data on employees' age, salary, level of education, gender, and ethnicity. Which data do you think is more likely to follow normal distribu..
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