Tegwen has the same number of brothers as she has sisters. Each one of her brothers has 50% more sisters
than brothers.
How many children are in Tegwen's family?
A 5
B 7
C 9
D 11
answer fast and I will mark you as the top one​

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 interquartile range of this data set? 2, 5, 9, 11, 18, 30, 42, 48, 55, 73, 81

I'm marking the brainliest and it's 15 points