1.  It is believed that 75% of American youth now have health insurance due to the health care law. Suppose this is true and let X equal the number of American…

If we have an average score of 550 with standad deviation of 100, wih 80 people with an average score of 532what will be the conclusion with a .05 level…

One hundred teachers attended a seminar on mathematical problem solving. The attitudes of representative sample of 12 of the teachers were measured before and after the seminar. A positive number…

the average salary for graduates entering the actuarial field is $40,000. if the salaries are normally distributed with a standard deviation of $5000 find the probabilty that  a. an individual…

One of the authors received a credit card bill for 3,036, but included a charge of 1,909 that was not valid. Find the values of the absolute and relative errors…