Environmentalists are concerned about emissions of sulfur dioxide into the air. The average number of days per year in which sulfur dioxide levels exceed 150 milligrams per cubic meter in Milan, Italy, is 29. The number of days per year in which emission limits are exceeded is normally distributed with a standard deviation of 4.0 days. a. What percentage of the years would average between 21 and 37 days of excess emissions of sulfur dioxide? b. What percentage of the years would exceed 37 days? (Round your answer to 1 decimal place e.g., 3.2) % c. What percentage of the years would exceed 41 days? (Round your answer to 2 decimal places e.g., 3.23) %

10. Suppose a normal distribution has a normal distribution with au = 25 and a standard deviation o = 5. Between what values of x do 95% of the values lie? a. 20 and 30 b. 35 and 45 c. 15 and 25 d. 15 and 35

The standard deviation of a population   A. Is the average of the squared deviations between each of the data points and the mean   B. Is the average distance from each of the data points to the population's mean   C. Is impossible to calculate   D. Is only for statisticians   E. All of the above   F. None of the above

Let x represent the hemoglobin count (HC) in grams per 100 milliliters of whole blood. The distribution for HC is approximately normal with μ = 14 for healthy adult women. Suppose that a female patient has taken 12 laboratory blood samples in the last year. The HC data sent to her doctor is listed below. We would like to know if the data indicates this patient has significantly high HC compared to the population. 22,17,20,17,17,14,16,21,15,21,15,22 Give the p-value and interpret the results. a) p = .1053; Based on 5% significance level, I will fail to reject the null hypothesis and conclude this patient does not have a high HC level. b) p = .0562; Based on 5% significance level, I will fail to reject the null hypothesis and conclude this patient does not have a high HC level. c) p = 0.0003; Based on 5% significance level, I will fail to reject the null hypothesis and conclude this patient does not have a high HC level. d) p = 0.0003; Based on 5% significance level, I will reject the…

What is the level of measurement of the variable “age”? A. IQR B. Range C. Median D. Ordinal E. Mode F. Nominal G. Mean H. Interval/Ratio I. IQV J. Standard deviation

The population mean mu is a measure of A. Central tendency of a sample B. Central tendency of a populationC. Dispersion of a population D. The uncertainty of a population E. None of the above

3. The fill volume of an automated filling machine used for filling cans of carbonated beverage isnormally distributed. Suppose that the mean of the filling operation can be adjusted easily, but thestandard deviation remains at 0.4 fluid ounce.a. At what value should the mean be set so that 99.9% of all cans exceed 12 fluid ounces?b. At what value should the mean be set so that 99.9% of all cans exceed 12 fluid ounces if thestandard deviation can be reduced to 0.09 fluid ounce?

The Law of Large Numbers states that as the number of observations in a sample increases, the mean of this is sample becomes a. exactly equal to the mean. b. closer and closer to the population mean. c. close to 0. d. further and further from the population mean.