# Question

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.

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.

## Answer to relevant Questions

Disturbing news regarding Scottish police concerns the number of crashes involving vehicles on operational duties (BBC News, March 10, 2008). Statistics showed that Scottish forces’ vehicles had been involved in traffic ...A random variable X follows the continuous uniform distribution with a lower bound of -2 and an upper bound of 4. a. What is the height of the density function f (x)? b. What are the mean and the standard deviation of the ...You have been informed that the assessor will visit your home sometime between 10: 00 am and 12: 00 pm. It is reasonable to assume that his visitation time is uniformly distributed over the specified two- hour interval. ...The average rent in a city is $1,500 per month with a standard deviation of $250. Assume rent follows the normal distribution. Use the empirical rule for normal distributions to answer the following questions. a. What ...(Use Excel) Let X be normally distributed with µ = 215 and σ = 9. In addition to providing the answer, state the relevant Excel commands.a. Find P(X>212).b. Find P(0 ≤ X ≤ 5).c. Find x such that P(X ≤ x) = 0.25.d. ...Post your question

0