a. What value should be assigned to the missing mean so that the resulting data would show no main effect for factor A? b. What value should be assigned to the missing mean so that the resulting data would show no main effect for factor B? c. What value should be assigned to the missing mean so that the data would show no interaction?
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- 2. Suppose that in Example 2.27, 400 units of food A, 500 units of B, and 600 units of C are placed in the test tube each day and the data on daily food consumption by the bacteria (in units per day) are as shown in Table 2.7. How many bacteria of each strain can coexist in the test tube and consume all of the food? Table 2.7 Bacteria Strain I Bacteria Strain II Bacteria Strain III Food A 1 2 0 Food B 2 1 3 Food C 1 1 1The following matrix presents the results of a two- factor study with n = 10 scores in each of the six treatment conditions. Note that one of the treatment means is missing B1 B2 B3 A1 4 6 14 A2 2 4 A) What value for the missing mean would result in no main effect for factor A? B) What value for the missing mean would result in no interaction?The results of a two-factor, independent-measures, equal n experiment are summarized in the following matrix. The numerical value in each cell is the mean score obtained from the sample in that treatment condition. Compute the overall means for the scores in A₁, the scores in A₂, the scores in B₁, and the scores in B₂. Enter each of the means to the right of the appropriate row or below the appropriate column in the matrix.
- The following matrix presents the results from an independent-measures, two-factor study with a sample of n = 10 participants in each treatment condition. Note that one treatment mean is missing. B1 B2 A1 5 8 A2 3 A) What value for the missing mean would result in no main effect for factor A? B) What value for the missing mean would result in no main effect for factor B? C) What value for the missing mean would result in no interaction?A developmental psychologist is studying bonding between healthy newborn babies and immediate family members. He wants to know if one-week-old infants use smell to recognize their fathers. To investigate, he selects a random sample of one-week-old infants. Each infant is presented with a garment worn by his or her father and two garments worn by unrelated men. The psychologist observes which garment each of the infants orients toward. The resulting data are summarized in the following table that shows the number of infants who oriented toward each of the three garments. What is are the degrees of freedom for this experiment? 4 3 1 22, For the three clusters identified in the accompanying Distance Matrix After Second Clustering table, find the average and standard deviations of each numerical variable for the schools in each cluster and compare them with the average and standard deviation for the entire data set. Does the clustering show distinct differences among these clusters? Compute the overall mean and overall standard deviation for each numerical variable. Median SAT Acceptance Rate Expenditures /Student Top 10% HS Graduation % Overall Mean enter your response here enter your response here% $enter your response here enter your response here enter your response here Overall Stdev enter your response here enter your response here% $enter your response here enter your response here enter your response here (Round to two decimal places as needed. Type N if the solution is undefined.) Colleges and Universities School…
- What is the covariance matrix V for M = 3 independent experiments with means m1, m2, m3 and variances a-r, (T�, O"§ ?“A researcher wants to examine the effects of siblings on the amount of annual salary people earned when they are 35 years old. Salary data of three groups of 35-year olds were collected and are presented here. 4 participants with no sibling while growing up (n1 = 4): 50K, 51K, 49K, 50K. 5 participants with 1 to 2 siblings while growing up (n2 = 5): 55K, 56K, 54K, 58K, 52K. 4 participants with 3 and more siblings while growing up (n3 = 4): 60K, 60K, 70K, 50K. The researcher calculated: ∑x2 = 39747, G2/N = 39325, ∑T2/n = 39525.” Do the data indicate significant differences among the three groups of 35-year olds? Test at the alpha = .05 level. a. No, the calculated F value was not larger than the critical F value; results were not statistically significant and fail to reject the null hypothesis. b. Yes, the calculated F value was not larger than the critical F value; results were not statistically significant and fail to reject the null hypothesis. c. Yes,…Two groups of secretaries operate under the same manager. Both groups have the same number of people, use the same equipment, and turn out about the same amount of work. During one maintenance penod group A had 10 service calls on the equipment, while group B had only 6 calls From these data, would you conclude that group A was harder on the equipment?