The average number of miles on vehicles traded in at Smith Brothers
Motors is 64,000. Smith Brothers Motors has started a new deal offering lower financing charges. They are interested in whether the average mileage on trade in vehicles has decreased. Test using  = 0.01 and the data from a random sample of trade in vehicles. Assume mileage is normally distributed. The mileages are in thousands.

-State the null and alternate hypotheses.
-Compute the value of the test statistic.
-Find the interval containing the P-value for the sample test statistic
-Based on your answers above, what is your conclusion?
-find the critical value.

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