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According to figures released by the New York City government, smoking among New York City teenagers is on a decline, continuing a trend that began more than a decade ago (The New York Times, January 2, 2008). According to the New York City Youth Risk Behavior Survey, the teenage smoking rate dropped to 8.5% in 2007 from about 17.6% in 2001 and 23% in 1997. City officials attribute the lower smoking rate to factors including a cigarette tax increase, a ban on workplace smoking, and television and subway ads that graphically depict tobacco-related illnesses.
In a report, use the above information to
1. Calculate the probability that at least one in a group of 10 New York City teenagers smoked in 2007.
2. Calculate the probability that at least one in a group of 10 New York City teenagers smoked in 2001.
3. Calculate the probability that at least one in a group of 10 New York City teenagers smoked in 1997.
4. Comment on the smoking trend between 1997 and 2007.
Forecast this time series for the first 4 months of the next year using the most appropriate method. Defend your choice of forecasting method.
A single observation of a random variable having an exponential distribution is used to test the null hypothesis that the mean of the distribution is θ = 2 against the alternative that it is θ = 5.
White blood cell counts are helpful for assessing liver disease, radiation, bone marrow failure, and infectious diseases. Listed below are recorded white blood cell counts.
Because of tough economic times, the Indiana legislature is debating a bill that could have significant negative implications for public school funding. There are three possibilities for this bill:
a bag contains 3 red marbles 4 green ones 1 lavender one 3 yellows and 2 orange marbleshow many sets of five marbles
More than 13 successes in 19 trials with a 40 percent chance of success. (Round the answer to 4 decimal places.) Fewer than 7 successes in 15 trials with a 40 percent chance of success. (Round the answer to 4 decimal places.)
a box of 1000 stuffed dinosaurs contains 100 that are missing their tails oh no. two dinos are drawn at random and
a study of residents of a region showed 20 were smokers. the probability of death due to lung cancer given that a
Determine the least squares equation. According to this information, what are the estimated sales for 2005? Listed below is the net sales in $ million for Home Depot, Inc. and its subsidiaries from 1993 to 2002.
the probability that a person in the united states has type o blood is 40. three unrelated americans are selected at
identify the type of sampling used random systematic convenience stratified or cluster. to estimate the percentage of
Of the adults in Jefferson County, 10% have had CPR training
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