A random sample of 80 eighth grade students' scores on a national mathematics assessment test has a mean score of 286. 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 30. At a=0.11, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). CIT z (a) Write the claim mathematically and identify Ho and H. Choose the correct answer below. OA. Ho: 280 OB. Ho: 280 (claim) H₂H>280 OC. Ho: H5280 (claim) H>280 Ha H>280 (claim) OD. Ho: 2280 (claim) VE. Ho: $280 QF. Ho<280 H₂H 280 H>280 (claim) H:2280 (claim) 21 (b) Find the standardized test statistic z, and its corresponding area. NS Z= (Round to two decimal places as needed.) MI (b) Find the standardized test statistic z, and its corresponding area. The standardized test statistic is
A random sample of 80 eighth grade students' scores on a national mathematics assessment test has a mean score of 286. 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 30. At a=0.11, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). CIT z (a) Write the claim mathematically and identify Ho and H. Choose the correct answer below. OA. Ho: 280 OB. Ho: 280 (claim) H₂H>280 OC. Ho: H5280 (claim) H>280 Ha H>280 (claim) OD. Ho: 2280 (claim) VE. Ho: $280 QF. Ho<280 H₂H 280 H>280 (claim) H:2280 (claim) 21 (b) Find the standardized test statistic z, and its corresponding area. NS Z= (Round to two decimal places as needed.) MI (b) Find the standardized test statistic z, and its corresponding area. The standardized test statistic is
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
![A random sample of 80 eighth grade students' scores on a national mathematics assessment test has a mean score of 286. 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 30. At
a=0.11, is there enough evidence to support the administrator's claim? Complete parts (a) through (e).
GILE
z (a) Write the claim mathematically and identify Ho and H. Choose the correct answer below.
OA. Ho: 280
OB. Ho: 280 (claim)
H₂H>280
OC. Ho: HS280 (claim)
H₂H>280
Ha 280 (claim)
VE. Ho: 5280
QF. Ho <280
OD. Ho: 2280 (claim)
H₂H<280
H>280 (claim)
H:2280 (claim)
21
(b) Find the standardized test statistic z, and its corresponding area.
NS
Z= (Round to two decimal places as needed.)
MI
(b) Find the standardized test statistic z, and its corresponding area.
The standardized test statistic is](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2a0c0db2-6aa7-4375-9a58-caee38addd31%2F9c44d37b-3c05-4cb6-b92d-bd3097c51e83%2F6wwaar_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A random sample of 80 eighth grade students' scores on a national mathematics assessment test has a mean score of 286. 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 30. At
a=0.11, is there enough evidence to support the administrator's claim? Complete parts (a) through (e).
GILE
z (a) Write the claim mathematically and identify Ho and H. Choose the correct answer below.
OA. Ho: 280
OB. Ho: 280 (claim)
H₂H>280
OC. Ho: HS280 (claim)
H₂H>280
Ha 280 (claim)
VE. Ho: 5280
QF. Ho <280
OD. Ho: 2280 (claim)
H₂H<280
H>280 (claim)
H:2280 (claim)
21
(b) Find the standardized test statistic z, and its corresponding area.
NS
Z= (Round to two decimal places as needed.)
MI
(b) Find the standardized test statistic z, and its corresponding area.
The standardized test statistic is
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