Sprint 12:17 AM 28%, a instructure-uploads.s3.amazonaws.co C 2 of 2 Homework 9 P

Question

Sprint 12:17 AM 28%, a instructure-uploads.s3.amazonaws.co C 2 of 2 Homework 9 Page 2Looking al this SPSS outpet, is there a significant difference in violence exposure (measured as number ef separate events) between genders? What are two ways that you can tell? Explain the parameters that indicate significance, please provide interpretation of results Hest for Equality of Meas for Equality of 09076566 15 VoExp assumed . Now, using the data file HSC1390 save (n 3515 for this test). Please repont whether males and females have similar, ee &fferent;, mean on the "approximae GPA scoee. Plcase prosent the steps of your scientific hypothesis 3. Homework 9: Page 2

Explanation / Answer

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Note: It's obvious that David Beckham doesn't know stats that well based on his answer.

Note: We do NOT look at Levene's Test to test for a difference in population means. It is ONLY used to determine which t-test / t-confidence interval to use. If the p-value for Levene's Test is GREATER than .05, we use the pooled t-test. If the p-value is LESS than .05, we must use the non-pooled t-test.

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Answer:

Method #1 - Since the p-value = .947 > alpha = .05, we can conclude that the population means are NOT significantly different.

Method #2 - Since the 95% confidnece interval DOES include 0, we can conclude that the population means are NOT significantly different.

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Discussion:

* Whenever the p-value < alpha, we CAN reject Ho and conclude that the population means ARE significantly different. Whenever the p-value > alpha, we can NOT reject Ho. So, we must conclude that the population means are NOT significantly different.

* If Ho is true (ie the population means are equal), then their difference should be 0. If 0 is NOT in our 95% CI, we can reject Ho and conclude that the population means ARE significantly different. If the CI does NOT inlcude 0, we can NOT conclude that the population means are significantly different.

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I hope this helped. If you have any questions, please ask them in the comment section. :)

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