For each of the following research questions, stale the null and alternative hyp

Question

For each of the following research questions, stale the null and alternative hypothesis. Be sure to indicate whether it is a non-directional (two-tailed), positive one-tailed, or negative one-tailed test. a National estimates indicate that college students hinge drink an average of 1.7 times per month. Do UHart students binge drink more or less often than students nationally? b Research shows that, without parenting support interventions. 32% of at risk parents" will abuse or neglect their child(ren). Does participation in the NFN visiting program a fleet the likelihood that at risk parents will abuse or neglect their child(ren) compared to those who do not receive interventions? c. More than half of lung cancer patients are or have been smokers. d. Is gender related to GPA for UHart students? e. Are students who attend traditional public high schools more or less like to attend college than those who attend private, charter or magnet schools? Based on the information provided below, indicate whether we should reject or fail to reject the null hypothesis: a. The a = .01 for a one-tailed test, and the p-value = .05. b. The a = .05 for a two-tailed test, and the p-value .01. c. The a = .05 for a two-tailed test, and Z_g = -1.99. d. The a = .05 for a positive one-tailed test, and Zt = -1.75. Match the following by writing the letter corresponding to each term in the left column on the line next to its matching definition in the right column: Type I Error Type II Error Alpha(a) Beta (beta) p[Type I error] Rejecting Ho when in fact it is true Pf Type II error] Failing to reject Ho when in fact it is false A friend from a rival school claims that UHart students arc not as smart as students from his school, Where the average GPA is a 3.0. Test your friend's claim with the following data about UHart students, showing each of the 6 steps of hypothesis testing and using a = 0.5 N = 155 UHart students selected at random X = 2.91 GPA points s_g = 0.9 GPA points

Explanation / Answer

4. Sample Mean = 2.91
Pop. Mean = 3
Sx = .9

alpha = .05

Ho: Mu>=3
Ha: Mu<3

Z = (3-2.91)/.9 = .1
So, P(Z>=.1) = 1-.5398 = .46 which is definitely more than .05 and hence we can't reject null ypothesis that Mu>=3

So, the claim is that Children are not as smart is FALSE. They are more or eqaully smart

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