3. Random samples of four different kinds of cereal show the following number suggested serving size of each brand. At a = 0.05, is there a difference in the number of calories for the different brands? Brand A Brand B Brand C Brand D 112 110 109 106 120 118 116 122 135 123 125 130 125 128 130 117 108 102 128 116 121 101 132 114 Innrooch, 9th Edition, Allan, G. Bluman.

3. Random samples of four different kinds of cereal show the following number suggested serving size of each brand. At a = 0.05, is there a difference in the number of calories for the different brands? Brand A Brand B Brand C Brand D 112 110 109 106 120 118 116 122 135 123 125 130 125 128 130 117 108 102 128 116 121 101 132 114 Innrooch, 9th Edition, Allan, G. Bluman.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the Jacobs Chemical Company obtained the following data on the time (in minutes) needed to mix the material. Compute the values below (to 2 decimals, if necessary). 2 33 31 36 32 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use a = 0.05. Sum of Squares, Treatment Sum of Squares, Error Mean Squares, Treatment × Mean Squares, Error Calculate the value of the test statistic (to 2 decimals). The p-value is less than 0.01 What is your conclusion? Manufacturer 1 17 23 21 19 M N N N N What conclusion can you draw after carrying out this test? Cannot conclude there is a difference in the mean time for these manufacturers 3 22 21 25 24 Conclude the mean time needed to mix a batch of material is not the same for all manufacturers b. At the a = 0.05 level of significance, use Fisher's LSD…
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15. Diameter of Douglas Fir Trees The diameter of the Douglas fir tree is measured at a height of 1.37 meters. The S following data represent the diameter in centimeters of a random sample of 12 Douglas firs in the western Washington Cascades. 156 162 147 173 147 190 130 101 159 113 181 109 Source: L. Winter. "Live Tree and Tree-Ring Records to Reconstruct the Structural Development of an Old-Growth Douglas Fir/Western Hemlock Stand in the Western Washington Cascades." Corvallis, OR: Forest Science Data Bank, 2005. (a) Obtain a point estimate for the mean and standard deviation diameter of a Douglas fir tree in the western Washington Cascades. (b) Because the sample size is small, we must verify that the data come from a population that is normally distributed and that the data do not contain any outliers. The figures show the normal probability plot and boxplot. The correlation between the tree diameters and expected z-scores is 0.982. Use Option 1 or Option 2 to determine if the…
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110 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 0 23 0.2091 1 0.0818 32 2 4 0.0364 36 3 16 52 4 15 0.1364 67 5 13 0.1182 80 6 13 0.1182 93 7 17 0.1545 110 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 5 times per week? %