Friday

December 19, 2014

December 19, 2014

Posted by **Annabella Richards** on Monday, June 20, 2011 at 2:09am.

- Maths -
**PsyDAG**, Monday, June 20, 2011 at 11:17amΣx/n = mean

for 19 students Σx = 19 * 14 = 266

(266 + x)/20 = 15

Solve for x.

**Answer this Question**

**Related Questions**

maths - these marks were obtained by class of 28 students in a science test. the...

physics - A tank filled with water has marks every 10 cm on one wall. The ...

math - Sammy got an average of 85% in four tests threethree of the scores were ...

math - A test consists of 120 questions. Each correct answer, each wrong answer ...

statistics - The average marks of 30 students in mathematics is 69. If the class...

math - The difference between Sally’s PE mark and science mark is 12, and the ...

Algorithm - write a pseudo code algorithm that will accept the marks in a test ...

math - the average mark of 10 tests is 76%.If the average mark of the first 7 ...

statistics - The final mark in QTQ100T has a normal distribution with an average...

Statistics - The marks of 100 students in an examination are normally ...