Score: 0 of 4 pts 9 of 16 (8 complete HW Score: 16.17%, 6.47 of 40 7.2.31-T Ques

Question

Score: 0 of 4 pts 9 of 16 (8 complete HW Score: 16.17%, 6.47 of 40 7.2.31-T Question Help A random sample of 85 eighth grade students' scores on a national mathematics assessment test has a mean score of 262. 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 32 At = 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 d) A. Ho: =260 OD, Ho s 260 (claim) O B. Ho : 260 (claim) Ha: Ho: -260 (claim) Ha : > 260 260 (claim) Ha : 260 (claim) E- OF. Ha : > 260 Click to select your answer and then click Check Answer.

Explanation / Answer

A) Option-F)

Test statistic = (X bar - mean) / (sd/sqrt(n))

= (262 - 260) / (32/sqrt(85))

= 0.58

P-value = P(Z > 0.58) = 0.281

Since P-value is greater than significance level, we should not reject the null hypothesis.

So, there is not enough evidence to support the claim

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