Two separate samples of subjects provide the following set of data. Is there a significant difference between the samples? Go through the steps of nypothesis testing using a two-tailed test and alpha = .05. X1 ("Control") X2 (“Treated") nį = 10 n2 = 15 %3D M1 = 3.5 M2 = 2.5 SS1 = 12.5 SS2 = 15.1
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- A program administrator at a high school wanted to see if there was a significant association between experiencing verbal abuse and anxiety in teenage women. She wasn't sure what to expect. Perform the correct statistical procedure to assess the degree of association between these variables and interpret your findings. Set alpha = .05 for your statistical test. YOU CAN EITHER TYPE YOUR WORK OUT HERE OR TAKE A PICTURE OF HANDWRITTEN WORK AND EMAIL IT TO ME. %3D Anxiety Verbal Abuse 5. 4. 4.The following data were obtained from a repeated-measures study comparing three treatment conditions. Use a repeated-measures ANOVA with alpha = .05 to determine whether there are significant mean differences among the three treatments.Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires caused by humans in the west? 356 of the 579 randomly selected wildfires looked at in the south were caused by humans while 322 of the 597 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the a = 0.01 level of significance? a. For this study, we should use z-test for a population proportion b. The null and alternative hypotheses would be: Ho: p1 p2 v (please enter a decimal) H1: p1 p2 v (Please enter a decimal) c. The test statistic z 2.619 (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the final conclusion is that ... O The results are statistically significant at a = 0.01, so there is sufficient evidence to conclude that the proportion of the 579 wildfires that were caused by…
- Casey is a statistics student who is conducting a one-sample z‑test for a population proportion p using a significance level of a=. Her null (H0) and alternative (Ha) hypotheses are H0:p=0.094Ha:p≠0.094 The standardized test statistic is z = 1.40. What is the P-value of the test? P-value =The yield of alfalfa from a random sample of six test plots is 1.4, 1.6, 0.9, 1.9, 2.2,and 1.2 tons per acre. Assume the data can be looked upon as a sample from anormal population. Test at the 0.05 level of significance whether this supports thecontention that the average yield for this kind of alfalfa is 1.5 tones per acre.Which of the following experiments uses independent samples? O You want to test whether a sample of chimpanzees raised in captivity and fed a strict vegan diet for their lifetimes live longer than the known average life span for all chimpanzees living in captivity. O You want to compare the depression levels of teenage girls before and after attending a weeklong camp focused on improving self-image. So you compare the mean Hamilton depression scores of a randomly selected group of teenage girls before and after they attend a weeklong camp focused on improving self-image. O You want to compare the mean first-month weight gain of premature babies to that of full-term babies. So you compare the mean first- month weight gain of a random sample of premature babies to the mean first-month weight gain of a random sample of full-term babies.
- The following data were collected from a Repeated-Measures study. Perform an ANOVA. Use Instructions: Use the data collected to compute the values listed in Table#1. data @.05 person Trial 1 Table #1 1. 2. 3. 4. 6. 7. 8. 9. 10. 11 12. A B C D E Df between Df within SS total SS between subjects SS error Df between subjects Df error 0 1 0 MS error 4 HSD APA summary 0 F ratio (computed) Trial 2 0 3 1 F (critical) as reported on F ratio table 5 1 Trial 3 6 6 6 8 4make it so i could copy and paste itZ= and P-Value=
- A new medication is being developed to treat severe nausea and vomiting among chemotherapy patients. The information below was generated from a small sample size (n = 11) and shows the number of times a chemotherapy patient vomited both before and after treatment due to the side effects of chemotherapy. Set up and interpret the results of a sign test at the alpha equals .05 level to determine if there is a difference in symptoms before and after treatment. Chemotherapy Patient Before Treatment After Treatment Difference Sign 1 9 3 2 12 5 3 14 7 4 9 4 5 8 2 6 11 3 7 15 7 8 12 8 9 7 8 10 9 5 11 8 7 A) We fail to reject H0, which states the median difference in the number of vomiting episodes in a day before and after treatment are equal because 1 is less or equal to critical value 1 for a sign test…You wish to test the following daim (Ha) at a significance level of a = 0.10. H.:P1 = P2 Ha:P1 + P2 You obtain a sample from the first population with 325 successes and 108 failures. You obtain a sample from the second population with 461 successes and 237 failures. test statistic = [three decimal accuracy] p-value = [four decimal accuracy]A newly installed automatic gate system was being tested to see if the number of failures in 1,000 entry attempts was the same as the number of failures in 1,000 exit attempts. A random sample of eight delivery trucks was selected for data collection. Do these sample results show that there is a significant difference between entry and exit gate failures? Use a = 0.05. Entry failures Exit failures Truck 1 Truck 2 Truck 3 Truck 4 Truck 5 44 40 55 56 62 Truck 6 52 Truck 7 Truck 8 50 53 55 56 55 50 45 51 45 47