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If heads is a success when we flip a coin, getting a six is a success when we roll a die, and getting an ace is a success when we draw a card from an ordinary deck of 52 playing cards, find the mean and the standard deviation of the total number of successes when we
(a) flip a balanced coin, roll a balanced die, and then draw a card from a well-shuffled deck;
(b) flip a balanced coin three times, roll a balanced die twice, and then draw a card from a well-shuffled deck.
Same survey showed that average length of time each store was in business in 6 years, with standard deviation of 2.5 years. Which is more variable, number of magazines or number of years?
Suppose in a population of 100,000, the probability that an individual will die from bird flu in a given winter is .00009. If the data fits a Poisson distribution, then the mean number of people in that population that will die from bird flu in on..
Fit both linear and an exponential trend to the data. (d) Which model is preferred? Why? (e) Make a forecast for 2003, using a trend model of your choice (or judgments forecast).
a random variable has the following probability distribution x px 0 0.10 1 0.20 2 0.35 3 0.26 4 0.09 a compute the
a stoplight at the corner of lincolnway and duff avenue is red 20 of the time. for someone who drives through this
75 numbers are rounded off to the nearest integer and then summed. if the individual round-off error are uniformly
A citizens' group interested in generating public and financial support for a new university basketball arena has published a questionnaire in area newspaper. Readers return the questionnaire by mail.
Use Bayes' rule to find conditional probability which Julianne is carrier, given that she and Jason have one child who doesn't have CF.
for each of the following combinations of values decide whether the combination is possible or impossible and if its
Using any linear programming software, solve the problem for the optimal answer and provide the value of the objective function and the variables at optimality. Provide a copy of your linear programming output. In addition to providing this output..
Teenage boys is approximately normal with and Levels above 200 warrant attention. Find the probability that a teenage boy has a cholesterol level greater than 215.
suppose that a category of world class runners are known to run a marathon 26 miles in an average of 142 minutes with a
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