(b).The following data were obtained in a study of the relationship between the weight and the chest size of infants at birth: Weight(kg) Chest size(cm) 2.75 29.5 2.15 26.3 4.41 32.2 5.52 36.5 3.21 27.2 4.32 27.7 2.31 28.3 4.30 30.3 3.71 28.7 Çalculate and interpret r.
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- The accompanying data represent the miles per gallon of a random sample of cars with a three cylinder 1.0 liter engineA cereal maker recently sampled 20 of its medium-size oat cereal packages to determine the weights of the cereal in each package. These sample data, measured in ounces, are given below. 14.4 14.9 18.6 14.1 18.9 14.3 15.9 18.5 17.1 18.1 18.7 16.5 17.5 13.1 16.4 15.6 17.3 18.3 13.3 13.2 Calculate the first and third quartiles for these sample data. The first quartile is oz. (Type an integer or decimal rounded to two decimal places as needed.) OZ. The third quartile is (Type an integer or decimal rounded to two decimal places as needed.) OZ.Construct a stem-and-leaf display of the data. What appears to be a representative strength value? Do the observations appear to be highly concentrated about the representative value or rather spread out? b. Does the display appear to be reasonably symmetric about a representative value, or would you describe its shape in some other way? c. Do there appear to be any outlying strength values? d. What proportion of strength observations in this sample exceed 10 MPa? The strength data for beams is attached
- The alcohol content of wine depends on the grape variety, the way in which the wine is produced from the grapes, the weather, and other influences. Here are data on the percent of alcohol in wine produced from the same grape variety in the same year by 16 winemakers in the same region of Italy: 12.86 12.88 12.81 12.70 12.51 12.60 12.25 12.53 13.49 12.84 12.93 13.36 13.52 13.62 12.25 13.16 Give a 95% confidence interval for the mean alcohol content of wine of this type.Listed below are the measured radiation emissions (in W/kg) corresponding to cell phones: A, B, C, D, E, F, G, H, I, J, and K respectively. The media often present reports about the dangers of cell phone radiation as a cause of cancer. Cell phone radiation must be 1.6 W/kg or less. Find the a. mean, b. median, c. midrange, and d. mode for the data. Also complete part e. 0.32 1.49 1.41 0.27 1.08 0.77 0.55 0.22 1.17 1.28 1.06 a. Find the mean. The mean is (Round to three decimal places as needed.) ... nA researcher collected how many grams of fat people on a specific diet consumed at breakfast and at lunch. The data for a sample of 8 people is shown in the table below. xx 11.3 8.2 7.2 3.6 2.3 2.5 2.7 0.4 yy 13.7 10.7 10.2 7.2 6.3 6.5 6.1 4.1 xx = grams of fat in breakfastyy = grams of fat in lunchThis data can be modeled by the equation ˆy=0.84x+4.07.y^=0.84x+4.07.Given this, how many grams of fat in lunch would be expected for a person who consumed 1.2 grams of fat at breakfast? Round to 1 decimal place.Answer =
- The accompanying data below represent the miles per gallon of a random sample of cars with a three-cylinder, 1.0 liter engine. 32.7 35.7 38.0 38.7 40.2 42.1 34.1 36.4 38.1 39.1 40.6 42.9 34.5 37.4 38.3 39.5 41.4 43.4 35.6 37.7 38.6 39.6 41.6 48.9 Compute the z-score corresponding to the individual who obtained 37.4 miles per gallon. Interpret this result. The z-score corresponding to the individual is ____ and indicates that the data value is _____ standard deviation(s) above/below the mean/median (Type integers or decimals rounded to two decimal places as needed.)Find the 5 number summary for the data shown 25 44 45 46 56 57 62 86 90 93 95 96 99 5 number summary:, , , , Use the Locator/Percentile method described in your book, not your calculator.A study of the effects of smoking on sleep patterns is conducted. The measure observed is the time, in minutes, that it takes to fall asleep. These data are obtained: Smokers: 63.3 56.0 22.1 47.6 53.2 48.1 52.7 34.4 60.2 43.8 23.2 13.8 Nonsmokers: 28.6 25.1 26.4 34.9 29.8 28.4 38.5 30.2 30.6 31.8 41.6 21.1 36.0 37.9 13.9 (a) Use R and report the number of observations for each group. (b) Use R and report the sample mean for each group. (c) Use R and report the sample standard deviation for each group. (d) Comment on what kind of impact smoking appears to have on the time required to fall asleep.
- Data was collected for a sample of organic snacks. The amount of sugar (in mg) in each snack is summarized in the histogram below. 10 80 85 90 95 100 105 110 115 amount of sugar (mg) What the sample size for this data set? Frequency 6Given below are the ages of motorcyclists at the time they were fatally injured in traffic accidents (based on data from the U.S. Department of Transportation). 18 38 23 14 18 34 16 42 28 24 40 20 23 34 37 21 32 25 17 28 33 25 23 19 51 18 29 Looking at the histogram for the data, on the horizontal axis what is the min and max value for the 5th bar? Given below are the ages of motorcyclists at the time they were fatally injured in traffic accidents (based on data from the U.S. Department of Transportation). 18 38 23 14 18 34 16 42 28 24 40 20 23 34 37 21 32 25 17 28 33 25 23 19 51 18 29 Looking at the histogram for the data, on the horizontal axis what is the min and max…Listed below are the measured radiation emissions (in W/kg) corresponding to cell phones: A, B, C, D, E, F, G, H, I, J, and K respectively. The media often present reports about the dangers of cell phone radiation as a cause of cancer. Cell phone radiation must be 1.6 W/kg or less. Find the a. mean, b. median, c. midrange, and d. mode for the data. Also complete part e. 0.45 0.77 0.72 0.68 1.53 1.28 0.75 0.99 0.55 0.56 1.12 --..- a. Find the mean. The mean is . (Round to three decimal places as needed.)