Please help with this question. Thanks

gulpxarff44
timer Asked: May 10th, 2015

Question Description

A nationwide test taken by high school sophomores and juniors has three sections, each scored on a scale of  to . In a recent year, the national mean score for the writing section was , with a standard deviation of . Based on this information, complete the following statements about the distribution of the scores on the writing section for the recent year.

a) According to Chebyshev's theorem, at least  of the scores lie between 26.8 and 74.8 .


(b) According to Chebyshev's theorem, at least  of the scores lie between 31.6 and 70.0 .


(c) Suppose that the distribution is bell-shaped. According to the empirical rule, approximately of the scores lie between 31.6 and 70.0 .


(d) Suppose that the distribution is bell-shaped. According to the empirical rule, approximately 99.7% of the scores lie between 

 and 

.

User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

This question has not been answered.

Create a free account to get help with this and any other question!

Related Tags

Brown University





1271 Tutors

California Institute of Technology




2131 Tutors

Carnegie Mellon University




982 Tutors

Columbia University





1256 Tutors

Dartmouth University





2113 Tutors

Emory University





2279 Tutors

Harvard University





599 Tutors

Massachusetts Institute of Technology



2319 Tutors

New York University





1645 Tutors

Notre Dam University





1911 Tutors

Oklahoma University





2122 Tutors

Pennsylvania State University





932 Tutors

Princeton University





1211 Tutors

Stanford University





983 Tutors

University of California





1282 Tutors

Oxford University





123 Tutors

Yale University





2325 Tutors