12.Professor Pete's calculus class has the following scores:

192131323745525562636365657778

As you can see, more than half of the class would fail the class if a standard grade scale were used. That is why he is going to pass anyone who scores higher than 1 standard deviation below the mean.

Use Excel to find the standard deviation and mean. Save As with last name, first name, hw15 and Submit the file in HW 15, Open Response.Round to two decimal places.

12 a. Standard deviation: _______________Mean: _______________

12 b. Find the new (lowest) passing grade for Professor Pete's class.Round to 2 decimal places. Use the value in a meaningful sentence.