Time Remaining: 00:27:49 Submit Quiz ab Sta Courses urse Home This Question: 1 p

Question

Time Remaining: 00:27:49 Submit Quiz ab Sta Courses urse Home This Question: 1 pt 30f 4 (0 complete) | This Quiz: 4 pts possible A random sample of 88 eighth grade students' scores on a national mathematics assessment test has a mean score of 263. 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 . 002. is there enough evidence to support the administrators claim? Complete parts (a) through (e). 260. Assume that the population standard deviation is 31. At izzes& Te (a) Write the claim mathematically and identifly Ho and Ha. Choose the correct answer below udy Plan OA. Ho: s 280 Ha: > 260 (claim) How 260 OF. Ho : s 260 (claim) Ha : > 260 tatCrunch D. OE, Ha: 2 260 (claim) hapter Cornt (b) Find the standardized test statistic z, and its corresponding area. ools for Suco ultimedia Li (Round to two decimal places as needed ) z» urchase Opt Pearson Tutor Services (c) Find the P-value. P-value= [ (Round to three decimal places as needed.) Click to select your answerls) sc Course Tools Syllabus Sample Tests and Quizzes

Explanation / Answer

The statistical software output for this problem is:

One sample Z summary hypothesis test:
: Mean of population
H0 : = 260
HA : > 260
Standard deviation = 31

Hypothesis test results:

Hence,

a) Hypotheses: Option A is correct.

b) z = 0.91

c) p - Value = 0.182

Mean n Sample Mean Std. Err. Z-Stat P-value 88 263 3.3046111 0.90782241 0.182

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.