Finding Probabilities for Sampling Distributions In Exercises 29–32, find the indicated probability and interpret the results . 32. Carbon Dioxide Emissions The mean per capita carbon dioxide emissions in 58 industrialized countries over a 22-year period is 25.5 metric tons. A random sample of 44 countries is selected. What is the probability that the mean carbon dioxide emissions for the sample is greater than 28 metric tons? Assume σ = 395.1 metric tons. (Source: Energy Reports)
Finding Probabilities for Sampling Distributions In Exercises 29–32, find the indicated probability and interpret the results . 32. Carbon Dioxide Emissions The mean per capita carbon dioxide emissions in 58 industrialized countries over a 22-year period is 25.5 metric tons. A random sample of 44 countries is selected. What is the probability that the mean carbon dioxide emissions for the sample is greater than 28 metric tons? Assume σ = 395.1 metric tons. (Source: Energy Reports)
Finding Probabilities for Sampling DistributionsIn Exercises 29–32, find the indicated probability and interpret the results.
32. Carbon Dioxide Emissions The mean per capita carbon dioxide emissions in 58 industrialized countries over a 22-year period is 25.5 metric tons. A random sample of 44 countries is selected. What is the probability that the mean carbon dioxide emissions for the sample is greater than 28 metric tons? Assume σ = 395.1 metric tons. (Source: Energy Reports)
Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.
Elementary Statistics: Picturing the World (7th Edition)
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