Question Help ▼A random sample of 82 eighth grade students' scores on a national mathematics assessment test has a mean score of 269. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders on this exam is morethan 260. Assume that the population standard deviation is 33. At a= 0.12, 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 us 260O B. Ho: H= 260 (claim)O C. H . μ= 260Ha > 260 (claim)Ha H> 260Ha µ> 260 (claim)D. Ho H<260O E. Ho Hs 260 (claim)H µ> 260O F. Ho u2 260 (claim)H u< 260Ha H2 260 (claim)(b) Find the standardized test statistic z, and its corresponding area.(Round to two decimal places as needed.)(c) Find the P-value.P-value =(Round to three decimal places as needed.)(d) Decide whether to reject or fail to reject the null hypothesis.O Reject HoFail to reject Ho(e) Interpret your decision in the context of the original claim,At the 12% significance level, thereenough evidence tothe administrator's claim that the mean score for the state's eighth graders on the exam is more than 260.Click to select your answer(s).O Type here to search1:00 AM4/23/2021S710121pausebreakpri scsysrqLEGOEGOdeletehome80backspacenum kYSID EIGHenter

Name: Question Help ▼A random sample of 82 eighth grade students' scores on
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: Question Help ▼A random sample of 82 eighth grade students' scores on a national mathematics assessment test has a mean score of 269. This test result prompts a state school administrator to declare that the mean score for the state's eighth graders

(a) Let μ be the population mean score for the state's eight graders. The claim is that the…

Math

Statistics

A random sample of 82 eighth grade students' scores on a national mathematics assessment test has a mean score of 269. 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 260. Assume that the population standard deviation is 33 At a=0.12, 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 us260 H > 260 (claim) O B. Ho =260 (claim) OC. Ho p=260 H > 260 H > 260 (claim) OD. H < 260 H u2 260 (claim) OE. H us 260 (claim) H> 260 OF. Ho i2 260 (claim) H, u<260 (b) Find the standardized test statistic z, and its corresponding area z= (Round to two decimal places as needed) (c) Find the P-value P.value =(Round to three decimal places as needed) (d) Decide whother to reject or tal to reject the nul hypothesis O Reject Ho O Fal to reject Ho (e) Interpret your decision in the context of the onginal claim Al the 12% signficance level, there v enough evidence to V the administrator's clam that the mean score for the state's eighth graders on the exam is more than 260 Click to select your answer(s).

A random sample of 82 eighth grade students' scores on a national mathematics assessment test has a mean score of 269. 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 260. Assume that the population standard deviation is 33 At a=0.12, 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 us260 H > 260 (claim) O B. Ho =260 (claim) OC. Ho p=260 H > 260 H > 260 (claim) OD. H < 260 H u2 260 (claim) OE. H us 260 (claim) H> 260 OF. Ho i2 260 (claim) H, u<260 (b) Find the standardized test statistic z, and its corresponding area z= (Round to two decimal places as needed) (c) Find the P-value P.value =(Round to three decimal places as needed) (d) Decide whother to reject or tal to reject the nul hypothesis O Reject Ho O Fal to reject Ho (e) Interpret your decision in the context of the onginal claim Al the 12% signficance level, there v enough evidence to V the administrator's clam that the mean score for the state's eighth graders on the exam is more than 260 Click to select your answer(s).

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

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 five observations from three normally distributed populations produced the following data: (You may find it useful to reference the F table.) (table is the screenshot picture) a. Calculate the grand mean. (Round intermediate calculations to at least 4 decimal places and final answer to 4 decimal places.) b. Calculate SSTR and MSTR. (Round intermediate calculations to at least 4 decimal places and final answers to 4 decimal places.) c. Calculate SSE and MSE. (Round intermediate calculations to at least 4 decimal places and final answers to 4 decimal places.) d. Specify the competing hypotheses in order to determine whether some differences exist between the population means. _H0: μA = μB = μC; HA: Not all population means are equal. _H0: μA ≤ μB ≤ μC; HA: Not all population means are equal. _H0: μA ≥ μB ≥ μC; HA: Not all population means are equal. e-1. Calculate the value of the F(df1, df2) test statistic. (Round intermediate calculations to at least 4 decimal…
A nationwide test taken by high school sophomores and juniors has three sections, each scored on a scale of 20 to 80. In a recent year, the national mean score for the writing section was 49.1, with a standard deviation of 9.2. Based on this information, complete the following statements about the distribution of the scores on the writing section for the recent year. A) according to Chebysheva theorem, at least 36% of the scores lie between ? And ?. Rouen answer to 1 decimal. B) according to Chebyshev’s theorem, at least what perfect of the scores lie between 30.7 and 67.5 ?
b. In a class of twenty-five 15-year old girls the average height is M = 62.60 inches. The national average for girls at this age is reported as follows: µ = 63.80 inches with a standard deviation, s = 2.66 inches. Compute z score
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 combined math and verbal scores for students taking a national standardized examination for college admission, is normally distributed with a mean of 2880 and a standard deviation of 300. If a college requires a student to be in the top 15 % of students taking this test, what is the minimum score that such a student can obtain and still qualify for admission at the college?answer:(round to the nearest integer)
A study was conducted for an aviation safety agency in which they surveyed thousands of passengers at airports across Europe. In this study, the "mass" for a passenger includes the weight of the passenger and all of the passenger's carry-on items, including infants without their own seats. For the 5,904 adult male passengers measured in summer, the sample mean and standard deviation for this mass were 88.8 kg and 15.9 kg, respectively. (a) Construct a 95% confidence interval (in kilograms) for the population mean mass for adult male passengers in summer. (Round your answers to three decimal places.) ___to__ kg (b) Write a sentence or two interpreting the confidence interval you found in part (a). With 95% confidence, we can estimate that the population mean mass of male passengers traveling in the summer is contained within the interval. We can estimate that 95% of the male passengers traveling in the summer in the sample have a mass that is contained within the interval.…
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
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.)
According to the Annual survey of drugs expenditure in country X, the annual expenditure forprescription drugs is $838 per person in the Northeast region of the country. A sample of 60 individualsin the Midwest shows a per person expenditure for prescription drugs of $745. Further, it is given thatthe population standard deviation of $300 Make the final conclusion based on the analysis
An article in the San Jose Mercury News stated that students in the California state university system take 4.5 years, on average, to finish their undergraduate degrees. Suppose you believe that the mean time is longer. You conduct a survey of 49 students and obtain a sample mean of 5.1 with a sample standard deviation of 1.2. Do the data support your claim at the 1% level? A) Find the test statistic. Round to 3 decimal places. b) Find the p-value. Round to 4 decimal places. c)What is the decision about the null hypothesis? D) state the conclusion
A random sample of 75 eighth grade students' scores on a national mathematics assessment test has a mean score of 278. 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 34. At a = 0.15, 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 C. Ho: µ2 270 (claim) Ha: H 270 O F. Ho: H= 270 Ha: H> 270 (claim) O E. Ho: us270 O D. Ho: H= 270 (claim) Ha: H> 270 Ha: µ> 270 (claim) (b) Find the standardized test statistic z, and its corresponding area. (Round to two decimal places as needed.) (c) Find the P-value. P-value = (Round to three decimal places as needed.)