As part of an experiment, four fabrics are tested for flammability at the National Bureau of Standards. The following burn times in seconds are recorded after a paper tab is ignited on the hem of a dress made of each fabric.   Fabric 1 17.8 16.2 17.5 17.4 15.0 Fabric 2 11.2 11.4 15.8 10.0 10.4 Fabric 3 11.8 11.0 10.0 9.2   Fabric 4 14.9 10.8 12.8 10.7   Pooled StDev = 1.693 Complete each of the following bulleted parts for this problem. Sum of Squares for Groups (SSG) is the measure of variability among groups.  Calculate SSG.   Sum of Squares Error (SSE) is the measure of variability within groups.  Use the formula to calculate it.   Fill in the following ANOVA table for this problem.   Source DF SS MS F Group         Error         Total           What are the two assumptions of an ANOVA?   Check these assumptions. What are you using to check each assumption?    State the ANOVA hypotheses.   Give the value of the test statistic.   Given HO is true, what is the distribution of the test statistic?   What is the p-value?   Make a decision at the 0.05 significance level.   Make a conclusion in terms of the problem.

In a study of exhaust emissions from school buses, the pollution intake by passengers was determined for a sample of nine school buses used in the Southern California Air Basin. The pollution intake is the amount of exhaust emissions, in grams per person, that would be inhaled while traveling on the bus during its usual 18-mile trip on congested freeways from South Central LA to a magnet school in West LA. Here are the amounts for the nine buses when driven with the windows open. 1.17     0.33    0.40     0.33     1.32     0.38     0.25     0.40     0.35   (a) Consider making a stemplot. Are there outliers or strong skewness that would preclude use of the t procedures? Which is correct? A. The sample is small and the stemplot is right skewed with possible outliers, so use of t procedures is not appropriate. b. The distribution is symmetric so use of t procedures is appropriate.    c. The sample is small and the stemplot is left skewed with possible outliers, so use of t procedures is…

b) Calculate the fitness of a population with allele frequency x = 0.4. W = Give your answer rounded to 2 decimal places. Find the allele frequency, x, of a population with fitness 0.2. X =

The table below has a total of 60 values. Find the 4th decile for the following Grouped Frequency Data Table (GFDT). Lower Class Upper Class Frequency Limit Limit 40 44 6. 45 49 6. 50 54 5 55 59 60 64 4 65 69 4 70 74 75 79 80 84 4 The 4th decile = CO CO

our p value is .03 and you chose your α level to be .05. What kind of error could you be making?   a. Type I error   b. Type II error   c. Type I and Type II error   d. Neither errors