Complete the curve below by entering the values of areas under the curve, the values of 1, 2 and 3 standard deviations, based on the Empirical Rule. b) The education officer wants to know what percentage of students whose scores were greater than 100 marks.
Common Entrance are usually graded out of 150 marks. The education officers of one of the
education districts, knows that the mean score in the district is 80 with a standard deviation of 20.
The students’ scores follow a
Common Entrance Exam.
a) Complete the curve below by entering the values of areas under the curve, the values of 1, 2 and 3 standard
deviations, based on the
b) The education officer wants to know what percentage of students whose scores were greater than 100 marks.
c) The Ministry of Education has developed a 3-tier rating for secondary schools. Students’ Common Entrance scores determine whether they attend a school in Tier 1, Tier 2 or Tier 3. For students to attend a Tier 1 School, they must score 85% or higher on the Common Entrance Score. A score between 60% and 85% will get students to a Tier 2 School. A Tier 3 school will accept students with scores below 60%. What percentage of students will attend schools in each
Tier?
d) The education officer has promised to provide scholarships to the students in the district whose performance are in the top 1%.
What score separates the top 1% of students from the bottom 99% ?
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