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A pair of numbers is picked up randomly (without replacement) from the set {1,2,3,5,7,11,12,13,17,19}. What is the probability that the number "11" was picked given that the sum of numbers was even?
It is suspected that the mean turnover has changed and is not 6.0. Use the .05 significance level.
Find the sample space S for this experiment.- List the outcomes in each of the events A, B, C, and D.- List the outcomes in the events A ∪ B and A ∩ B.
Are A and B independent events? Explain how you know.- Are A and B complementary events? Explain how you know.
Assume you randomly sample one mouse from the colony. The probability his age will be between 55 and 70 days is?
A grocery store checkout counter has a service rate of 45 per hour, exponentially distributed, with Poisson arrivals at the rate of 30 per hour.
Determine the expected value and standard error of the sum of 400 draws?
1. 95 numbers are rounded off to the nearest integer and then summed. if the individual round-off error are uniformly
IQ scores above 130 are often called "very superior." What percentage of children had very superior scores in 1932?
If a randomly chosen US household earns over 250, 000 per year, what is the probability it is from California?
the cost of a college education has increased at a much faster rate than costs in general over the past twenty years.
The grade appeal process at a university requires that a jury bestructured by selecting 6 individuals randomly from a pool of 6 students and 13faculty . (a) What is the probability of selecting a jury of all students?
While considering three managers for a possible promotion, the company president decided to solicit information from employees about the managers.
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