Arandom sample of 90 eighth grade students' scores on a national mathematics assessment test has a mean score of 276 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 270 Assume that the population standard deviation is 40. At a = 0 13, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify Ho and H. Choose the correct answer below. O C. Ho p2 270 (claim) A. Ho p= 270 H p>270 (claim) OB. Ho ps270 (claim) Ha p>270 Ha p<270 Ho H=270 (claim) Ha p> 270 VE Hg ps270 H. p>270 (claim) OF H p<270 Hp2270 (claim) a (b) Find the standardized test statistic z, and its corresponding area. z= 1.42 (Round to two decimal places as needed.) (c) Find the P-value. P-value = (Round to three decimal places as needed.) R.. Insta... W PDF DRAFT 2021 dents.pdf Deputy Fire. Enter your answer in the answer box and then click Check Answer. Check Answer 2 parts remaining Clear All Riley LAMA DRAET Denuta. Fire Calendar - mregal...

Arandom sample of 90 eighth grade students' scores on a national mathematics assessment test has a mean score of 276 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 270 Assume that the population standard deviation is 40. At a = 0 13, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify Ho and H. Choose the correct answer below. O C. Ho p2 270 (claim) A. Ho p= 270 H p>270 (claim) OB. Ho ps270 (claim) Ha p>270 Ha p<270 Ho H=270 (claim) Ha p> 270 VE Hg ps270 H. p>270 (claim) OF H p<270 Hp2270 (claim) a (b) Find the standardized test statistic z, and its corresponding area. z= 1.42 (Round to two decimal places as needed.) (c) Find the P-value. P-value = (Round to three decimal places as needed.) R.. Insta... W PDF DRAFT 2021 dents.pdf Deputy Fire. Enter your answer in the answer box and then click Check Answer. Check Answer 2 parts remaining Clear All Riley LAMA DRAET Denuta. Fire Calendar - mregal...

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 80 eighth grade students' scores on a national mathematics assessment test has a mean score of 275. 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 270. Assume that the population standard deviation is 33. 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. A. Ho: uS 270 Hg:u> 270 (claim) Ο Β. H : μ270 Ο FΕ H :μ2 270 (claim) Ha:p 270 (claim) Hai H> 270 (b) Find the standardized test statistic z, and its corresponding area. z= 1.36 (Round to two decimal places as needed.) (c) Find the P-value. P-value = 0.087 (Round to three decimal places as needed.) (d) Decide whether to reject or fail to reject the null hypothesis. Reject Ho Fail to reject Ho
A random sample of 83 eighth grade students' scores on a national mathematics assessment test has a mean score of 289. 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 34. 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 Ha. Choose the correct answer below. Ο Α. Η0: μ 280 C. Ho: H 280 O D. Ho: H= 280 Ha: µ> 280 (claim) E. Ho:H2 280 (claim) Ha:H 280 (claim) (b) Find the standardized test statistic z, and its corresponding area. (Round to two decimal places as needed.)
a-c
The mean score on a driving exam for a group of driver’s education students is 76 points, with a standard deviation of 6 points. Apply chebychev’s theorem to the data using K=2. Interpret, At least ___% of the exam score falls between ___and ____
1) Which is relatively better: a score of 88 on a Psychology test or a score of 45 on an Economics test? Scores on the Psychology test have a mean of 92 and a standard deviation of 10. Scores on the Economics test have a mean of 57 and a standard deviation of 5. Use measures of relative position to answer this exercise (Z-score).
A random sample of 85 eighth grade students' scores on a national mathematics assessment test has a mean score of 292. 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 39. At a = 0.09, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify Ho and H₂. Choose the correct answer below. OA. Ho: H=285 (claim) B. Ho: ≤285 Ha: H>285 (claim) H₂H>285 OD. Ho: H=285 H₂: H>285 (claim) OE. Ho: 285
A random sample of 83 eighth grade students' scores on a national mathematics assessment test has a mean score of 275. 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 270. Assume that the population standard deviation is 30. At a = 0.02, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify Ho and H,. Choose the correct answer below. O A. Ho: H=270 (claim) Ha: u> 270 O B. Ho u2270 (claim) H µ 270 (claim) O E. H, µs270 (claim) Ha p>270 Ho Hs 270 H, p > 270 (claim) OF.
The number of peanuts in a 16 ounce can of nut munchies is normally distributed with a mean of 93.6 and a standard deviation of 4.2 peanuts the number of peanuts in a 20 ounce can of gone nuts is normally distributed with a mean of 111.8 and a standard deviation of 3.4 peanuts. (a) Carmen purchased a 16 ounce can of nut munchies and counted 100 peanuts what is the Z score for this can of peanuts? (b) Angelo purchased a 20 ounce can of gone nuts and counted 116 peanuts what is the Z score for this can of peanuts? (c) Carmen declares that purchase purchasing her can of nut munchies with 100 peanuts is less likely than Angelo purchasing a can of gone nuts with 116 peanuts is Carmen statement correct? Use the definition of a Z score to support or refute Carmen's claim.
A random sample of 83 eighth grade students' scores on a national mathematics assessment test has a mean score of 263. This test result prompts a state school administrator o declare that the mean score for the state's eighth graders on this exam is more than 260. Assume that the population standard deviation is 31. At a = 0.04, is there enough evidence to support the administrator's claim? Complete parts (a) through (e). (a) Write the claim mathematically and identify Ho and H₂. Choose the correct answer below. OA. Ho: 2260 (claim) H₂ H 260 OD. Ho: H=260 Ha: μ> 260 (claim) example Get more help. OB. Ho: 260 (claim) OC. Ho: 260 (claim) H₂: H>260 OF. Ho: ≤260 (claim) H₂:μ> 260 Clear all Check answer
Partially Correct (a): Your answer is incorrect. Students at a major university are complaining of a serious housing crunch. They complain that many students have to commute too far to school because there is not enough housing near campus. University officials respond with the following information: the mean distance commuted to school by students is 15.0 miles, and the standard deviation of the distance commuted is 3.9 miles. Assuming that the university officials' information is correct, complete the following statements about the distribution of commute distances for students at this university.
A random sample of 80 eighth grade students' scores on a national mathematics assessment test has a mean score of 275. 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 270. Assume that the population standard deviation is 33. 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 H. Choose the correct answer below. A. Ho: us 270 O B. Ho: H 270 Hg: u> 270 (claim) O F. Ho: H2270 (claim) O D. Ho: H=270 (claim) H3:µ> 270 O E. Ho: H= 270 Ha: µ> 270 (claim) Ha: u<270 (b) Find the standardized test statistic z, and its corresponding area. (Round to two decimal places as needed.)
I attached.