Based on data from the Center for Statistics, 30% of adult Americans smoke. In a sample of 12 adults: a) What is the probability of finding at least 1 smoker in the sample? B) What is the probability of finding exactly 5 smokers in the sample? C) What is the probability of finding exactly 7 non-smokers in the sample? D) Find the mean and the variance of the number of smokers

The federal reserve controls certain interest rates in the united states. investors often try to speculate as to whether the federal reserve will raise or lower rates and by how much. suppose a company conducts extensive interviews with financial analysts, and as a result, predicts that "thefed" will increase rates by an average of 0.25 percentage points every six months for the forseeable future. which type of equation could be used to model the predicted interest rates over the next several years, assuming no other significant changes? a) a linear equation b) a quadratic equation c) a polynomial equation d) an exponential equation