1. One of the requirements for a graduate course is to be able to read about a subject and glean enough information to solve a problem. For this problem you are required to use the normal approximation to the binomial to render a solution. Suppose 44% of adult Americans surveyed said that they approve of the job done by President Joe Biden. Assume that this percentage is true for the current population of adult Americans. What is the probability that 140 or more adult Americans in a random sample of 300 will hold this opinion?

a. Use the normal approximation to the binomial to solve this problem.You must give a numerical answer.

b. use excel to solve this problem

c. compare and comment on what you found out.