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A random sample of 78 eighth-grade students' scores on a national mathematics assessment test has a mean score of 280. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 275. Assume that the population standard deviation is 32. At a=0.05, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify HO and Ha Part 2 (b) Find the standardized test statistic z. Z= Round to two decimal places as needed Part 3 (c) Find the P-value. P-value= (Round to three decimal places as needed.) Part 4 (d) Decide whether to reject or fail to reject the null hypothesis. Fail to reject Upper HO Reject Upper HO Part 5 (e) Interpret your decision in the context of the original claim. At the significance level, there enough evidence to the administrator's claim that the mean score for the state's eighth graders on the exam is more than

A random sample of 78 eighth-grade students' scores on a national mathematics assessment test has a mean score of 280. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 275. Assume that the population standard deviation is 32. At a=0.05, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify HO and Ha Part 2 (b) Find the standardized test statistic z. Z= Round to two decimal places as needed Part 3 (c) Find the P-value. P-value= (Round to three decimal places as needed.) Part 4 (d) Decide whether to reject or fail to reject the null hypothesis. Fail to reject Upper HO Reject Upper HO Part 5 (e) Interpret your decision in the context of the original claim. At the significance level, there enough evidence to the administrator's claim that the mean score for the state's eighth graders on the exam is more than

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A random sample of 78 eighth-grade students' scores on a national mathematics assessment test has a mean score of 280. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 275. Assume that the population standard deviation is 32. At a=0.05, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify HO and Ha Part 2 (b) Find the standardized test statistic z. I Z= Round to two decimal places as needed Part 3 (c) Find the P-value. P-value= (Round to three decimal places as needed.) Part 4 (d) Decide whether to reject or fail to reject the null hypothesis. Fail to reject Upper HO Reject Upper HO Part 5 (e) Interpret your decision in the context of the original claim. At the significance level, there enough evidence to the administrator's claim that the mean score for the state's eighth graders on the exam is more than
Transcribed Image Text:A random sample of 78 eighth-grade students' scores on a national mathematics assessment test has a mean score of 280. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is more than 275. Assume that the population standard deviation is 32. At a=0.05, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify HO and Ha Part 2 (b) Find the standardized test statistic z. I Z= Round to two decimal places as needed Part 3 (c) Find the P-value. P-value= (Round to three decimal places as needed.) Part 4 (d) Decide whether to reject or fail to reject the null hypothesis. Fail to reject Upper HO Reject Upper HO Part 5 (e) Interpret your decision in the context of the original claim. At the significance level, there enough evidence to the administrator's claim that the mean score for the state's eighth graders on the exam is more than
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