# Answer the following 4 part question using an excel spreadsheet and explain.

Anonymous

Question description

Over the years, a math instructor has recorded the grades that she awards on a particular exam. The results are shown in the table to the right.

Part 1 - How many students in a typical class of 30 would she expect to score more than 95%?

Part 2 - How many students in a typical class of 30 would she expect to score more than 85%?

Part 3 - If she wanted to set the pass mark so that 65% of students passed and 35% failed, what  pass mark would she use?

Part 4 - This year, there are 5 students in a class of 38 who scored over 95%. What's the chance of this happening randomly?

 Your Calculations Grades Students 1 to 5 5 6 to 10 1 11 to 15 0 16 to 20 1 21 to 25 1 26 to 30 6 31 to 35 18 36 to 40 47 41 to 45 95 46 to 50 183 51 to 55 251 56 to 60 260 61 to 65 252 66 to 70 249 71 to 75 220 76 to 80 200 81 to 85 180 86 to 90 160 91 to 95 140 96 to 100 85

1.xlsx

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