In an experiment designed to test the output levels of three different treatments, the following results were obtained: SST = 450, SSTR = 120, nr = 19. Set up the ANOVA table and test for any significant difference between the mean output levels of the three treatments. Use a = 0.05. Do not round your intermediate calculations. Source Sum Degrees Mean Square F p-value (to 2 decimals) of Variation of Squares of Freedom (to 2 decimals) (to 4 decimals) Treatments 120 Error Total 450 The p-value is - Select your answer - What is your conclusion? - Select your answer -

Use the following ANOVA table for regression to answer the questions. Analysis of Variance Source DF SS MS F P Regression 1 291.4 291.4 2.01 0.158 Residual Error 174 25230.0 145.0     Total 175 25521.4           Give the F-statistic and p-value.Enter the exact answers.The F-statistic is =The p-value is =

An ANOVA is used to evaluate the mean difference among three treatment conditions with a sample of n= 12 particpantsin each treatment. For study, what is df total?

A study was conducted to determine if the performance of a certain type of surgery on young horses had any effect on certain kinds of blood cell types in the animal. Fluid samples were taken from each of six foals an hour after the operation. Suppose that the data on WBC leukocytes follow the normal distribution. One sample Chi-squared test for variancedata: wbcX-squared = 3.5321, df = 5, p-value = 0.3815alternaative hypothesis: true variance is less than 4 Question: Is there evidence to say that the variance of WBC leukocytes is less than 4? State the conclusion based from the results of the test. Choices:- There is no sufficient evidence that the variance of WBC leukocytes is less than 4.- There is a sufficient evidence that the variance of WBC leukocytes is less than 4.

Suppose the mean retail price oer gallon of regular gasoline int the United States is $3.42 with a standard eviation of $0.40 and the retail price per gallon has a normal bell shaped distribution. Use the Empirical Rule to answer the following quesitona. What percentage of regular gasoline sold between $2.62 and $3.82 per gallon? what percentage of regualr gasoline sold for more the $3.82 per gallon?

what is the value in cell D? Round to 2 decimal places. How many total observations were there in the study? Hint: use df(total) to figure out the number of total observations.  The following computer output is for an analysis of variance in which yields (bu/acre) of different varieties of oats were compared. Answer the following questions based on this ANOVA table. Source df SS MS F ratio Prob Between groups 2 76.90 38.45 D 0.63 Within groups 11 859.81 78.16     Total 13 936.17

Suppose x has a distribution with ? = 14 and ? = 7.   (a) If a random sample of size n = 33 is drawn, find ?x, ? x and P(14 ≤ x ≤ 16). (Round ?x to two decimal places and the probability to four decimal places.) ?x =  ? x =  P(14 ≤ x ≤ 16) =  (b) If a random sample of size n = 65 is drawn, find ?x, ? x and P(14 ≤ x ≤ 16). (Round ? x to two decimal places and the probability to four decimal places.) ?x =  ? x =  P(14 ≤ x ≤ 16) =  (c) Why should you expect the probability of part (b) to be higher than that of part (a)? (Hint: Consider the standard deviations in parts (a) and (b).)The standard deviation of part (b) is      part (a) because of the      sample size. Therefore, the distribution about ?x is      .

A repeated-measures ANOVA was calculated with df = 1, 14. If the same data were analyzed with a repeated-measures t test, how many degrees of freedom would be used with the t statistic?

How does increasing the alpha/significance level increase the power of a statistical test?