7×[(9+8)-(12-7)] can you help​

Which statements regarding the diagram are true? check all that apply.

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)?

What is the range? can’t seem to find it out