Melissa collects data on her college graduating class. She finds out that of her classmates, 40% are brunettes, 30% has blue eyes, and 5% are brunettes that have blue eyes. What is the probability that one of Melissa classmates will be brunette or have blue eyes?

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Me n o w. i need t h i s. 10 points

Kevin's bank offered him a 4.5% interest rate for his mortgage. if he purchases 3 points, what will be his new rate?