Are you smarter than a second-grader? A random sample of 58 second-graders in a certain school district are given a standardized mathematics skills test. The sample mean score is =x54 . Assume the standard deviation of test scores is =σ13 . The nationwide average score on this test is 58 . The school superintendent wants to know whether the second-graders in her school district have weaker math skills than the nationwide average. Use the =α0.01 level of significance and the critical value method. Find the critical value(s). Round the answer(s) to three decimal places, if necessary. If there is more than one critical value, separate them with commas. Critical Values :
Are you smarter than a second-grader? A random sample of 58 second-graders in a certain school district are given a standardized mathematics skills test. The sample mean score is =x54 . Assume the standard deviation of test scores is =σ13 . The nationwide average score on this test is 58 . The school superintendent wants to know whether the second-graders in her school district have weaker math skills than the nationwide average. Use the =α0.01 level of significance and the critical value method. Find the critical value(s). Round the answer(s) to three decimal places, if necessary. If there is more than one critical value, separate them with commas. Critical Values :
Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 5CR
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Are you smarter than a second-grader? A random sample of 58 second-graders in a certain school district are given a standardized mathematics skills test. The sample mean score is
=x54
. Assume the standard deviation of test scores is
=σ13
. The nationwide average score on this test is
58
. The school superintendent wants to know whether the second-graders in her school district have weaker math skills than the nationwide average. Use the
=α0.01
level of significance and the critical value method.
Find the critical value(s). Round the answer(s) to three decimal places, if necessary. If there is more than one critical value, separate them with commas.
Critical Values :
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