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An artifact is discovered at a certain site. If it has 46% of the carbon-14 it originally contained, what is the approximate age of the artifact to the nearest year? (carbon -14 decays at the rate of 0.0125% annually.)
A) 6212 years
B) 3680 years
C) 2698 years
D) 4320 years
Choose an American driver at random and let the random variable X be the number of speeding tickets the driver has received in the last two years. The discrete probability distribution of X is shown.
Dogs were trained with urine samples from bladder cancer patients and people from a control group who did not have bladder cancer.
An accounting professor at a state university in Vermont recently gave a three-question multiple-choice quiz. What is the probability of getting a perfect score if you were forced to guess at each question?
Interpret coefficient on log (salesm). If salesm were to be increased by 20%, what would be estimated change in mktgp? Would this effect be substantive?
The bank wants to find out the waiting time of their customers during the Friday evening hours from 5pm to 8pm. Using the data in ungrouped form, compute the Standard Deviation, using the computational formula.
The mean number of passengers per cruise is 1,820 and the standard deviation is 120.
Within distribution of scores, measures of dispersion give an indication of?
Five test vehicles of each kind were crashed, with results given below. Research question: Are mean crash damages the same for these 3 vehicles?
Discuss any limitations (inaccurate data; incomplete information; not enough samples for testing)can have an regression analysis.
Consider the continuous random variable X, which has a uniform distribution over the interval from 20 to 28. The probability that X will take on a value between 21 and 25 is.
You're in charge of an experiment to evaluate a treatment which is advertised as being 90% effective at killing a particular insect. You plan an experiment in which the treatment is tested on 200 insects.
Normalized matrix for one decision criterion at Firm T is given below.
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