What is the iqr (inter quartile range) for the data set? 11 6 19 14 21 7 13 15 15 question 10 options: 8 9 15 17

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

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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)?