stats Question #2?

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A Software co. gives job applicants a test of ability. The mean for that test has been 160 in the past. 25 applicants are randomly selected from one university. They produce a mean score of 183 and standard deviation of 12. Use a .05 level of significance to test the claim that this sample comes from a population WI a mean score greater than 160.
Hypothesis HO, H1 :
Test statistic
Critical value
conclusion about HO:

2006-12-12 13:24:43 · 1 answers · asked by cozdabuch 2 in Science & Mathematics ➔ Mathematics

1 answers

Ho = mean = 160
H1 = mean > 160
Test Stat: 9.583
critical value = 1.645
conclusion: reject Ho

2006-12-12 13:57:24 · answer #1 · answered by Modus Operandi 6 · 0⤊ 0⤋