Question
The marks of a sample of 25 students from a large class in a recent test have sample mean 57.2 and standard deviation 7.3. The
The marks of a sample of 25 students from a large class in a recent test have sample mean 57.2 and standard deviation 7.3. The marks are subsequently adjusted: each mark is multiplied by 1.1 and the result is then increased by 8.
Calculate the sample mean and standard deviation of the adjusted marks.
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The Homework Clubs Preparing For Algebra Math Help For Struggling Kids
Authors: Susan Everingham
1st Edition
1723708585, 978-1723708589
