A sample of n=15 scores has a mean of m=6. One person with a acore of X=22 is added to thr sample. What is the value for the new sample mean ?

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)?