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A professor wishes to recruit 2 students for a research project. The probability that a student will accept the position is 0.30. What is the probability that 4 students must be asked before 2 accept the positions?
there is about 80 chance that a randomly chosen person aged 20 will still be alive at age 65. suppose we randomly
what is the value of the t score for a 98 confidence interval if we take a sample of size 22?a. 2.845b. 2.518c. 2.861d.
a researcher is studying the weight changes that women go through over the course of pregnancy childbirth and
The Food King Chain employs more than 3,000 people. The worker's ages are approximately normally distributed, with a mean of 31 years and a standard deviation of 4.3 years.
Find a 99% confidence interval estimate of the proportion of people who say that they voted.
If the mean lifetime of this type of component is 100 hours and its standard deviation is 19 hours, how many of these component must be in stock so that the probability of the system is in continual operations for the next 2,000 hours is at least ..
in a midwestern state an automobile insurance company has a large number of customers. from company files it is known
Consider that you are a line manager in your current Corporation. There is a 0.50 probability that you will be promoted this year. There is a 0.65 probability that you will get a promotion or a raise. The probability of getting a promotion and a r..
a cable company offers its 10000 customers two special services high-speed internet and digital phone. approximately
You scored 650, but another student, who took the exam on the same day you did, scored 800. What conclusion can you draw?
a fan cost index is calculated for each of the professional sports to give an idea of what it costs a family to go to a
Determine the centerline and the upper and lower control limits for a 3-sigma mean control chart in which each sample consists of 4 cylinders
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