Scores on a recent Stat test were normally distributed with mean 74.5 and standard deviation 8.51. What was the lowest score a student could earn and still be in the top 10%?

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?

Solve this problem! extra ! 3025/5.5 = a/90.75

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