The critical values associated with a 80% Cl for the population mean when x = 12.5, %3D n 13 and o is unknown are:
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- What is the critical value if population proportion is 0.08 and alpha = 0.02 for a z test. How do you determine it?If the observed statistic exceeds the critical ratio, what can we say about the p value with respect to the alpha level? A. p < α B. p > αExplain why the critical value of t, one-tailed, alpha = .05 is the same as the critical value of t, two-tailed, a .10 .
- A survey of 90 recently delivered women on the rolls of a county welfare department revealed that 27 had a history of intrapartum or postpartum infection. What is the critical value of z if we need to conclude that the population proportion with a history of intrapartum or postpartum infection is less than 0.25.To deal with the phenomenon of alpha inflation when doing multiple t-tests, what post-hoc tests such as the Bonferroni Correction do is _____. * Divide the critical value of t by the number of comparisons Multiply the alpha by the number of comparisons Divide the alpha level by the number of comparisons Multiply the critical value of t by the number of comparisonsusing the z table (table e), find the critical value (or values) for each. a. alpha=0.10, two tailed test b. alpha=0.01, right tailed test c. aplha=0.005, left tailed test
- If I have a sample mean less than 30 at alpha= 0.05. What is the critical value using the Z tableFor a population of highly creative individuals with a creativity score µ = 60 and σ = 10, determine the percentage(s) associated with the particular z – score(s). What percentage of highly creative individuals have a creativity score below a z – score of + 1? What percentage of highly creative individuals have a creativity score below a z – score of + 2? What percentage of highly creative individuals have a creativity score below a z – score of + 1? What percentage of highly creative individuals have a creativity score below a z- score of – 1? What percentage of highly creative individuals have a creativity score below a z – score of – 2? What percentage of highly creative individuals have a creativity score above a z – score of – 2? What percentage of highly creative individuals have a creativity score above a z – score of – 1?The test statistic of Z equals=−2.06 is obtained when testing the claim that p<0.58 Using a significance level of α=0.01 find the critical value(s).