# Ron is comparing the effectiveness of four cleansers

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4.Ron is comparing the effectiveness of four cleansers on three different types of stains. The table below shows thepercent of each stain removed by the cleansers. Effectiveness of Cleansers Cleanser% of Stain Removed Brand Tomato Juice Motor Oil Rust W 87% 78% 21%
MAFS.912.S-IC.2.6 Webb: 2 A. Brand WB. Brand XC. Brand YD. Brand Z 5.The following chart gives the winning times in a marathon over a period of years.If a sportscaster plans to comment on these results, which would be an accurate statement? MAFS.912.S-IC.2.6 Webb: 2 6.Mike and Juanita want to learn more about students’ dietary intake. What is the bestway to collect this information? MAFS.912.S-IC.2.3 Webb: 2
7.Which expression represents a simplified form of MAFS.912.N-RN.1.2 Webb: 1 8.A customer service manager will determine if employees process more calls per hour based on the number of15-minute breaks employees take in an 8-hour shift. She randomly selected half of the employees to take two breaks,while the other half took one break. The results are shown below.Total Customer Service Calls ProcessedHOUR1 HOUR 2 HOUR 3 HOUR 4 HOUR 5 HOUR 6 HOUR 7 HOUR 8 ONE 15-MINUTE BREAK 105 107 112 113 102 100 99 101 TWO 15-MINUTE BREAKS 103 98 109 113 107 114 116 110 Based on the data in the table, which conclusion is valid? MAFS.912.S-IC.2.5 Webb: 2 A. The manager should allow employees to take two breaks because they processed the most number of calls in onehour.B. The manager should allow employees to take two breaks because they processed more calls on an hourly averagefor the whole shift.C. The manager should not allow employees to take two breaks because they processed the fewest number of calls inone hour.D. The manager should not allow employees to take two breaks because they processed fewer calls for the first halfof the shift.
9.The owners of a manufacturing company conducted a survey to determine the mean income of the customers whoprefer the company’s brand of clothing. From a random sample of 100 customers, it was determined that their meanincome was \$47,600. Which conclusion can be made based on this information? MAFS.912.S-IC.1.1 Webb: 1

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