2.) Collette is self-employed and sells cookware at home parties. She wants to estimate the average amount a client spends at each party. A random sample of 29 receipts gave a mean of x = $37.52 with standard deviation s = $4.68. a.) Find a 99% confidence interval for the average amount spent by all clients. (12 points) b.) Interpret the meaning of the confidence interval in the context of this problem. (2 points)