Wages and salaries make up only part of a total compensation. Other parts include paid leave, health insurance, and many others. In 2007, wages and salaries among manufacturers in the United States made up an average of 65.8% of total compensation. To determine if this changed in 2008 a random sample of manufacturing employees was drawn. Can we infer that percentage of total compensation for wages and salaries increased between 2007 and 2008? Use a 5% significance level.

The table shows the annual compensation of 40 randomly chosen CEOS (millions of dollars). Saved 5.12 1.81 17.55 18.07 194.40 24.11 6.06 12.84 24.08 6.56 15.81 87.73 8.63 2.58 2.71 25.37 13.12 4.10 25.99 15.46 5.69 11.02 4.25 37.30 18.31 5.49 6.05 14.04 21.08 8.94 1.74 5.43 6.27 2.78 0.74 8.54 4.81 3.34 1.61 4.50 picture Click here for the Excel Data File (a) Select the correct histogram for the above data. Histogram A Histogram B Histogram 35 Histogram C Histogram 30 35 Histogram 25 30 40 35 20 25 30 15 20 25 15 20 10 15 10 0. 20 40 120 20 40 60 Compensation 120 60 80 180 20 Compensation 100 140 Compensation O Histogram A O Histogram B O Histogram C (b) Describe the shape of the histogram. Type here to search 83% Percent 10 09 08 180 Percent 80 140 Percent 120 180

A B C 7.98 5.09 9.18 14.22 9.45 17.9 14.88 9.92 18.83 10.35 6.75 12.5 16.52 11.07 21.13 23.46 15.92 30.84 14.02 9.31 17.63 14.55 9.68 18.37 8.65 5.56 10.11 18.49 12.44 23.89 9.94 6.46 11.92 21.16 14.31 27.62 12.41 8.19 15.38 18.1 12.17 23.34 11.45 7.51 14.03 20.54 13.87 26.75 17.2 11.54 22.09 14.35 9.55 18.09 15.41 10.29 19.58 13.08 8.65 16.31 13.14 8.7 16.4 18.47 12.43 23.85 21.47 14.53 28.06 17.13 11.49 21.98 14.93 9.95 18.9 9.89 6.43 11.85 13.63 9.04 17.08 9.75 6.32 11.65 15.74 10.52 20.04 27.14 18.5 36

Course Eval    Prof Eval4.0    4.64.5    4.74.0    3.94.3    4.74.3    4.94.3    4.63.9    4.63.3    3.14.7    5.04.1    3.93.1    3.44.1    4.34.0    4.33.2    3.62.7    3.14.6    4.33.7    4.74.1    4.04.5    4.73.4    3.63.4    3.53.3    3.34.4    4.44.5    4.34.1    4.54.5    4.64.2    4.74.0    4.33.5    3.84.3    4.42.4    2.23.6    4.34.7    4.74.0    4.14.2    3.94.4    4.14.0    4.14.0    3.94.1    4.04.8    4.83.4    3.14.5    4.53.4    3.23.9    3.84.6    4.34.7    4.93.3    3.93.7    4.04.0    4.54.1    4.24.2    4.34.0    4.04.5    4.83.7    4.43.2    3.53.5    3.93.9    3.94.3    4.03.1    3.63.2    3.24.1    4.44.1    4.53.4    3.93.6    3.94.5    4.33.7    3.64.1    4.62.2    2.12.7    3.34.1    4.73.3    3.54.5    4.83.4    4.23.5    4.13.7    3.84.2    4.53.8    4.64.2    4.33.7    4.04.9    5.13.7    3.43.5    3.43.5    4.34.7    4.84.6    5.04.1    4.73.0    3.43.4    3.53.5    3.84.1    4.23.9    3.94.3    4.43.4    3.3

The table shows the annual compensation of 40 randomly chosen CEOS (millions of dollars). 5.16 1.96 26.34 9.74 14.68 6.54 2.48 5.03 193.53 18.73 25.84 8.25 13.14 18.93 .96 6.75 69.53 18.54 22.48 5.36 9.97 6.52 1.67 5.86 22.24 15.01 19.42 4.89 9.30 3.89 0.72 2.46 33.06 13.65 22.87 6.75 8.39 4.74 1.32 2.66 picture Click here for the Excel Data File (a) Select the correct histogram for the above data. Histogram A Histogram B Histogram C Histogram Histogram Histogram 35 40 35 30 35 30 30 25 25 25 20 20 20 15 15 15 10 10 10 Percent Percent Percent

Arsenic Amounts Arkansas 4.80 4.90 5.02 5.37 5.43 5.37 5.60 5.61 5.57 5.91 5.97 6.12 California 1.50 3.71 3.95| 4.45| 4.94| 5.12 5.33 5.35 5.41 5.49 5.56 5.61 Texas 5.57 5.82 6.62 6.90 6.85 6.88 | 7.05 7.34 7.48| 7.58 7.71 | 7.73 I

The table shows the annual compensation of 40 randomly chosen CEOs (millions of dollars).  4.93 1.93 24.16 10.10 13.76 6.28 3.28 4.61 192.38 17.25 25.53 8.92 12.48 18.24 1.80 6.58 67.86 13.97 27.34 4.45 11.50 4.41 2.27 6.22 26.20 14.43 18.61 4.64 9.42 3.23 0.88 3.56 31.07 12.81 23.59 6.59 8.74 4.25 1.38 2.22 (b) Describe the shape of the histogram. A) The distribution is skewed to the left. B) The distribution is symmetric. C) The distribution is skewed to the right   (c) Identify any unusual values. (Round your answers to 2 decimal places.)     Unusual values   million   million

The table shows the annual compensation of 40 randomly chosen CEOS (millions of dollars). 5.32 1.94 192.33 27.10 17.85 9.20 73.33 25.07 14.10 12.86 9.15 5.88 27.65 25.35 10.84 1.83 16.51 5.76 15.20 3.60 31.07 18.86 10.51 1.64 11.45 5.81 4.61 3.65 20.62 7.85 1.41 6.39 3.14 3.84 8.32 0.74 4.07 4.62 pícture Click here for the Excel Data File 1.53 4.01 (a) Select the correct histogram for the above data. Histogram A Histogram Histogram B 40 35 Histogram Histogram C 40 30 35 25 Histogram 30 20 25 30 15 20 10 15 20 10 15 0. 10 40 60 80 120 Compensation 20 40 60 80 140 160 Compensation 20 40 60 80 140 Compensation: 5 Percent 180 Percent 000 120 35 25 180 Percent 100 120

A researcher wanted to explore whether scores showed improvement based on the hours of practice. The data includes the increase in scores for a specific task and the corresponding number of hours each participant spent practicing that task. What is the predicted score for 130 hours of practice? Please provide your answer using whole numbers; decimals are not necessary.

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