7.2.31-T Question A random sample of 75 eighth grade students' scores on a national mathematics assessment test has a mean score of 293. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on th more than 285. Assume that the population standard deviation is 32. At a = 0.14, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify H, and H. Choose the correct answer below. OA Ho: H2 285 (claim) O B. Ho: u= 285 (claim) Hu> 285 O E. H: u< 285 C. Ho: us 285 Hu<285 H3: u> 285 (claim) OD. H u= 285 Hu> 285 (claim) OF. H: us 285 (claim) H u> 285 Ha: p2 285 (claim) (b) Find the standardized test statistic z, and its corresponding area. z= (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Check Answer Clear All parts remaining 340 PM

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A random sample of 75 eighth grade students' scores on a national mathematics assessment test has a mean score of 293. 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 285. Assume that the population standard deviation is 32. At a = 0.14, 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.
O A. Ho:H2 285 (claim)
HaiH<285
O B. Ho:H= 285 (claim)
C. Ho: Hs 285
Ha: u> 285 (claim)
Ha: H> 285
D. Ho: H= 285
Ha:H> 285 (claim)
O E. Ho:H<285
Ha: µ2 285 (claim)
OF. Ho: Hs285 (claim)
Ha:H> 285
(b) Find the standardized test statistic z, and its corresponding area.
(Round to two decimal places as needed.)
Enter your answer in the answer box and then click Check Answer.
Check Answer
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Transcribed Image Text:7.2.31-T Question Help A random sample of 75 eighth grade students' scores on a national mathematics assessment test has a mean score of 293. 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 285. Assume that the population standard deviation is 32. At a = 0.14, 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. O A. Ho:H2 285 (claim) HaiH<285 O B. Ho:H= 285 (claim) C. Ho: Hs 285 Ha: u> 285 (claim) Ha: H> 285 D. Ho: H= 285 Ha:H> 285 (claim) O E. Ho:H<285 Ha: µ2 285 (claim) OF. Ho: Hs285 (claim) Ha:H> 285 (b) Find the standardized test statistic z, and its corresponding area. (Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. Check Answer 3 parts remaining Clear All 3:40 PM N 1/14/2021 Type here to search Del PrtScn F8 Home F9 End F10 PgUp PgDn Ins F11 F12 DII F5 F6 F7 Esc F3 F4 F1 F2 Backspace 23 081 3 4. E T. Y Tab F. G H. K (8) P R
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