For Rachel's independent t-test, if the mean of group 1 = 10, mean of group 2=18, SS1=5, SS2=12 ,there are 7 individuals per group. What is the value of t obtained?
For Rachel's independent t-test, if the mean of group 1 = 10, mean of group 2=18,...
An independent-measures research study compares three treatment conditions using a sample of n = 7 in each treatment. For this study, the three samples have SS1 = 15, SS2 = 25, and SS3 = 10. What value would be obtained for MSwithin? 50/18 50/20 50/2 3750/3
An independent-measures research study compares three treatment conditions using a sample of n = 5 in each treatment. For this study, the three samples have SS1 = 10,SS2 = 20, and SS3 = 15. What value would be obtained for MSwithin?a. 45/14b. 45/12c. 10/2d. 10/3
in the t test for independent groups, the unbiased estimate of the population variance _______. select all that apply. a. s1 2 alone b. s2 2 alone c. a weighted average of s1 2 and s2 2 d. (ss1 + ss2)/(n1 + n2 -2) I know "d" is accurate but wondering if c is also. that is s1 squared and s2 squared, I believe.
12. Suppose we wanted to test the hypothesis that a control group of cancer patients (Group 1) would report higher mean pain ratings than an experimental group receiving special massage treatments (Group 2). Use the following information. Compute a t-statistic for independent groups: Remember: SD2 is the variance, which is the square of the standard deviation. If mean group 1 = 82.1 SD21 = 42.1 n1 = 25 mean group 2 = 74.1 SD22 = 39.7 n2 = 25 What...
please answer all of the questions for me! Question 2 If sp2 is = 81, n = 9 and 522 = 27, n2 = 9, what is s(M1 - M2)? O a 12 O b. 4.73 O c. 6 3.46 Question 3 If we obtain anr 2 of 0.09, what can we expect our Cohen's d to be? .8 .5 Cannot be determined. 2 O Question 4 If our t-statistic is 3.00, and our df = 10, what is our...
To An independent-measures t hypothesis test is appropriate when the value for a is known a. b. the mean for a treated group of subjects is compared to a known population mean C. one sample is used to test a hypothesis about one population P there are two separate samples containing different subjects 17. One sample of n 5 scores has a variance of s 10 and a second sample of n= 10 scores has s pooled variance is computed...
Nutrition might also affect cognitive performance. A group of researchers hypothesize that students who eat fast food often have worse grades than those who eat healthier food. Consider the data for the two groups. The mean grades of students who regularly eat fast food is 78.5 (M1 = 78.5) and the mean grade for students who cook healthier food is 81 (M2 = 81). There were 22 participants in the study as a whole, and there are 11 participants in...
Water Land b/w independent measures t test One group of participants was expected to perform a memory task under water and a second group of participants was expected to perform a memory task on land. 82 84 76 85 86 The data for memory accuracy scores are shown to the right in column Rand S, respectively) 83 80 75 79 78 86 82 Determine the following: 82 82 84 86 Use the appropriate two-tailed statistical test and an alpha level...
TIPAMT – Tip Amount (coded as 1, 2, 3, 4, or 5) where 1 = <10%; 2 = 10-12%; 3 = 12-14%; 4 = 15-16%; 5 = >18%. (TIPAMT was directly measured from customers’ payments for the checks). MLTSRV – Multiple Servers in Attendance (0=No; 1=Yes). (For customers on Tuesday, this variable was coded as 1. For customers on Wednesday, this variable was coded as 0). #PRTY - # of Individuals in the Party. (The primary server noted the number...
If an independent-groups t test has seven participants in each group, then the degrees of freedom are a) 12 b) 7 c) 14 d) 6 If the null hypothesis is true, then the t test should be close to a) ±1.96 b) ±3.00 c) 0.00 d) ±1.65