8. A random sample of 90 eighth grade students' scores on a national mathematics assessment test has a mean score of 282. 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 280. Assume that the population standard deviation is 36. At α = 0.03, 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. Choose the correct answer below. OA. Ho: ≤280 Ha: H>280 (claim) O D. Ho: μ = 280 Z= (c) Find the P-value. OB. Ha: H>280 (claim) (b) Find the standardized test statistic z, and its corresponding area. (Round to two decimal places as needed.) P-value= Ho: μ< 280 Ha: 2280 (claim) O E. Ho: H=280 (claim) H₂: H>280 (Round to three decimal places as needed.). OC. Ho: ≤280 (claim) H₂: H>280 OF. Ho: ≥280 (claim) Ha: μ<280
8. A random sample of 90 eighth grade students' scores on a national mathematics assessment test has a mean score of 282. 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 280. Assume that the population standard deviation is 36. At α = 0.03, 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. Choose the correct answer below. OA. Ho: ≤280 Ha: H>280 (claim) O D. Ho: μ = 280 Z= (c) Find the P-value. OB. Ha: H>280 (claim) (b) Find the standardized test statistic z, and its corresponding area. (Round to two decimal places as needed.) P-value= Ho: μ< 280 Ha: 2280 (claim) O E. Ho: H=280 (claim) H₂: H>280 (Round to three decimal places as needed.). OC. Ho: ≤280 (claim) H₂: H>280 OF. Ho: ≥280 (claim) Ha: μ<280
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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