Friday
December 19, 2014

Homework Help: Statistics

Posted by Daniel on Thursday, March 7, 2013 at 10:20am.

In the quiz in Exercises 1 and 2, the grading scheme is as follows: each right answer is awarded 5 points, and 1 point is taken off for each wrong answer. Recall that the quiz consists of 10 questions, and that in the class, the average number of right answers is 6.2 and the SD of the number of right answers is 1.4. In what follows, it will help to express a studentís score in terms of the number of right answers the student got.

(1) Find the average score of the class.

(2) Find the SD of scores of the class.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

STAT1 - In the quiz in Exercises 1 and 2, the grading scheme is as follows: each...
Statistics - A quiz consists of 10 multiple choice questions. Each question is ...
Math - At Smart Middle School students are required to take 7 classes each ...
math - At Smart Middle School students are required to take 7 classes each ...
8th grade - At Smart Middle School students are required to take 7 classes each ...
Statistics - A true-false test consists of 20 questions, each of which has one ...
Math - The old 30-question AHSME was graded as follows: Students were awarded 5 ...
statistics - The following are all quiz scores of a student in a statistics ...
math - a quiz has 25 questions with 4points awarded for each correct answer and ...
algebra - each week, mandy's algebra teacher gives a 10 point math quiz. after 5...

Search
Members