For the following ANOVA null hypothesis: U= P2=P3= H4= P5, The number of treatments in this experiment is: Select one: а. 5 O b. 1 O c. 3 O d. 4 Fi Next page VITY NEVT ACT VITY
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- The following results are from an independent-measures, two-factor study with n=5 participants in each treatment condition. Use a two-factor ANOVA with α=.05 to evaluate the main effects and the interaction.Three treatments are compared for the treatment of in a between-subjects study. The following table of results were created to compare the three different treatment options. Treatment 1 Treatment 2 Treatment 3 n = 5 n = 5 n = 5 M = 2 M = 5 M = 8 N = 15 T = 10 T = 25 T = 40 G = 75 SS = 64 SS = 80 SS = 96 ΣX2 = 705 Use an ANOVA with α = .05 to determine whether there are any significant differences among the three treatment means. Calculate η2 as a measure of effect size. State the results as they would appear in a research report.Two groups were polled about their attitudes towards capital punishment. In one group 30 out of 100 favored capital punishment, and in the other group 40 out of 80 favored capital punishment. Calculate an appropriate test value test the hypothesis that the population proportions are the same.
- A researcher is interested in the amount of sleep an individual receives after consuming a sleeping aid (Melatonin, Valerian root, and Placebo). The researcher randomly selects individuals into either group. However, some individuals drop out of the study which results in unequal sample sizes. Melatonin Valerian Placebo n=6 n=10 n=4 N=20 M=14 M=13 M=9 G=250 T=84 T=130 T=36 ΣX2=3377 SS=60 SS=90 SS=37 a. Using symbols, state the hypotheses for a two-tailed test with α=0.05. b. Locate the critical region. In doing so, determine the degrees of freedom values. c. Calculate the F-ratio.Two samples were drawn independently from two normal populations. Sample 1: 11.6, 11.35, 10.1, 10.85, 10.35, 10.6, and 11.1.Sample 2: 5.85, 8.85, 9.85, 11.85 and 7.85.Test to determine whether the means of the two population differs (use α=0.05).The following is the information for a completely randomized experimental design involving four treatments, where 29 observations were recorded for each treatment for a total of 116 observations. SST = 312 (Sum of Squares Between Groups); SS Total = 1,248 (Sum of Squares Total). The computed value of F, or the test statistic, is ________. Multiple Choice 0.25 29.0 12.44 25.0
- collected data from 150 surveys ne nanaed out at a busy park located in the region. To continue the study into the drinking habits of adults, the researcher decides to collect data from adults working in "white collar" jobs to see whether their drinking habits are in the same proportion as the general public. The null hypothesis for this test is Ho: p = 0.26 and the alternative hypothesis is Ha: p<0.26. The researcher collected data from a random sample of 120 adults with "white collar" jobs of which 25 stated that they drank once a week or less in the last month. Assume that the conditions that must be met in order for us to use the N(0, 1) distribution as the sampling distribution are satisfied. Find the values of the sample proportion, p, the test statistic, and the p-value associated with the test statistic. Round all values to the nearest thousandth. P = 0.30, z = 0.803, p-value = 0.041 A P = 0.208, z = -1.290, p-value = 0.098 P = 0.75, z = -1.32, p-value = 0.599 P = 0.208, z =…The following data were obtained from a repeated- measures study comparing three treatment conditions. Conduct a hypothesis test to examine whether there was a significant treatment effect (alpha = .05, follow four-step procedure) Treatment Participant I II III P A 6 8 10 24 G = 48 B 5 5 5 15 ΣX2 = 294 C 1 2 3 6 D 0 1 2 3 T = 12 T = 16 T = 20 SS = 26 SS = 30 SS = 38Consider the experiment of tossing a coin twice...please check my work List the experimental outcomes. Let H=Heads & T=Tails Define a random variable that represents the number of heads occurring on the two tosses. Show what value the random variable would assume for each of the experimental outcomes.
- In a randomized block design, a treatment has four levels with seven blocks. Use this information and α = 0.01, complete the following table and write the decision about the null hypothesis. Source of Variation SS Treatment 199.48 265.24 306.59 Blocks Error Total Answer Choices: df a. F = 4.90, fail to reject the null hypothesis b. F=3.90, fail to reject the null hypothesis F = 2.90, fail to reject the null hypothesis d. F=3.90, reject the null hypothesis c. MS FA researcher randomly assigns college freshmen to either of two experimental conditions. Because both groups consist of college freshmen, someone claims that it is appropriate to use a t test for the two related samples. Comments?
