Question

The weights (in ounces) of 18 cookies are shown. 0.71 1.35 0.85 1.62 0.75 0.87 1.35 1.53 0.99 0.71 1.19 1.47 0.47 1.22 0.87 1.47 1.72 0.75 Find the IQR of the given sample data. Show the exact value, no rounding. Answer:

2. The amount spent on textbooks for the fall term was recorded for a sample of five hundred university students. The mean expenditure was calculated to be $500 and the median expenditure was calculated to be $425. Which of the following statements is accurate? Select one: The most frequently occurring textbook cost in the sample was $425 50% of the students sampled had textbook costs that were no less than $425 50% of the students sampled had textbook costs that were less than $500 50% of the students sampled had textbook costs equal to $425 50% of the students sampled had textbook costs equal to $500

3. Suppose the results of a math test given to a group of 30 students can be summarized as follows: the mean of the test scores is 78, and the median of the test scores is 71. What type of distribution most likely describes the shape of the test scores? Select one: symmetric skewed to the right unable to determine with the information given skewed to the left Expert Answer

Answer 1

Answer 1)

Q1 = 0.75

Q3 = 1.47

IQR = Q3 - Q1 = 1.47 - 0.75

IQR = 0.72

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