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4) (6) The average mass of 1000 pills in a sample was 0.8229 g. The standard...
6. Answer each question, given is a sample of 1000 observations which distribution follow a Gaussian...
6. Answer each question, given is a sample of 1000 observations which distribution follow a Gaussian distribution. a. The mean is 100 and the standard deviation is 3. Based on this information what is the expected maximum amount of observations that is bigger than 109? b. The mean is 100 and the variance is 9. Based on this information what is the expected maximum amount of observations that is bigger than 109? c. Given is a dataset of 1000 observations...
6. A sample of 9 emerging economies yields an average inflation rate of 4 with a sample standard ...
6. A sample of 9 emerging economies yields an average inflation rate of 4 with a sample standard deviation of 1. A sample of 16 developed economies yields an average inflation rate of 3 with a sample standard deviation of 0.5. (a) Construct the 95% confidence interval for the difference between the population average inflation rate in emerging economies and that in developed economies. (b) A macroeconomist wishes to test the null hypothesis that average inflation rate is the same...
a random sample of 25 people whose population average weight is 160 pounds with a standard...
a random sample of 25 people whose population average weight is 160 pounds with a standard deviation of 20 pounds would have a standard deviation of the sample mean equal to ? What is the mean of the sampling distribution referred to in question 4?
1. Calculate the average and standard deviation for the mass of water contained in the beaker....
1. Calculate the average and standard deviation for the mass of water contained in the beaker. What does the standard deviation tell you about the precision of the beaker? Remember that you will use your data to support your choice in your discussion. a. フ-go2 TABLE 1.10 Beaker Calibration Calculations Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Trial 6 7.6 20 7.7907.770 7-7707.9727.755 7.6u3 7.994 7-793 7.8257.9963.02 フ·878らm4 mass water delivered volume water delivered average volume delivered...
The average mass of a freight car is 5634.5 kg with a standard deviation of 642...
The average mass of a freight car is 5634.5 kg with a standard deviation of 642 kg. What is the probability that a sample of size 100 will have an average mass between 5600 and 5700 kg? Give your answer to four decimal places.
The average fuel economy of a sample of 79 Japanese cars was 30.5 mpg with a standard deviation 6.1 mpg. Do these data...
The average fuel economy of a sample of 79 Japanese cars was 30.5 mpg with a standard deviation 6.1 mpg. Do these data present evidence that the average fuel economy of all Japanese cars is higher than the corresponding US average of 20.1 mpg? Report and appropriate hypothesis test, write out all the steps we went over in class, and use a 1% significance level |(1) We are testing [Select] (2) Ho: The average fuel economy [Select [Select] (3) Ha:...
Sample 2 97.79 g 102.95 g 101.15 g Sample 1 (a) Mass of 98.32 g crucible...
Sample 2 97.79 g 102.95 g 101.15 g Sample 1 (a) Mass of 98.32 g crucible + lid (b) Mass of crucible, lid + 103.76 g KCIO3 (c) Mass of crucible, lid + 102.01g residue after 1st heating (d) Mass of crucible, lid + residue after 101.69 g 2nd heating (e) Mass of crucible, lid + 101.68 g residue after 3rd heating 101.05 g 101.01 g Data Analysis .Use your data to determine the experimental mass percent of oxygen in...
A sample of 57 research cotton samples resulted in a sample average percentage elongation of 8.16 and a sample standard...
A sample of 57 research cotton samples resulted in a sample average percentage elongation of 8.16 and a sample standard deviation of 1.45. Calculate a 95% large-sample CI for the true average percentage elongation u. (Round your answers to three decimal places What assumptions are you making about the distribution of percentage elongation? We assume the distribution of percentage elongation is normal with the value of o known. We make no assumptions about the distribution of percentage elongation. We assume...
Mass of KxFe(C2O4)y · zH2O : 4.70 g Mass of sample : 0.175 g Mass of...
Mass of KxFe(C2O4)y · zH2O : 4.70 g Mass of sample : 0.175 g Mass of FeCl3 used in preparation : 1.60 g Molarity of standard NaOH used : 0.100 V1, volume of standard NaOH required for first equivalence point : 7.750 mL V2, volume of standard NaOH required for second equivalence point : 19.70 mL 1. Calculate the mass of potassium in the sample 2. Calculate the percent of potassium in the sample 3. Calculate the volume of standard...
The historical returns on a portfolio had an average return of 21 percent and a standard...
The historical returns on a portfolio had an average return of 21 percent and a standard deviation of 29 percent. Assume that returns on this portfolio follow a bell-shaped distribution. a. Approximately what percentage of returns were greater than 79 percent? (Round your answer to the nearest whole percent.) b. Approximately what percentage of returns were below –66 percent? (Round your answer to 1 decimal place.) ____________________________________________________________________________________________________________________________ The following relative frequency distribution was constructed from a population of 400. Calculate...
6. A sample of 9 emerging economies yields an average inflation rate of 4 with a sample standard deviation of 1. A sample of 16 developed economies yields an average inflation rate of 3 with a sample standard deviation of 0.5. (a) Construct the 95% confidence interval for the difference between the population average inflation rate in emerging economies and that in developed economies. (b) A macroeconomist wishes to test the null hypothesis that average inflation rate is the same...
1. Calculate the average and standard deviation for the mass of water contained in the beaker. What does the standard deviation tell you about the precision of the beaker? Remember that you will use your data to support your choice in your discussion. a. フ-go2 TABLE 1.10 Beaker Calibration Calculations Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Trial 6 7.6 20 7.7907.770 7-7707.9727.755 7.6u3 7.994 7-793 7.8257.9963.02 フ·878らm4 mass water delivered volume water delivered average volume delivered...
The average fuel economy of a sample of 79 Japanese cars was 30.5 mpg with a standard deviation 6.1 mpg. Do these data present evidence that the average fuel economy of all Japanese cars is higher than the corresponding US average of 20.1 mpg? Report and appropriate hypothesis test, write out all the steps we went over in class, and use a 1% significance level |(1) We are testing [Select] (2) Ho: The average fuel economy [Select [Select] (3) Ha:...
Sample 2 97.79 g 102.95 g 101.15 g Sample 1 (a) Mass of 98.32 g crucible + lid (b) Mass of crucible, lid + 103.76 g KCIO3 (c) Mass of crucible, lid + 102.01g residue after 1st heating (d) Mass of crucible, lid + residue after 101.69 g 2nd heating (e) Mass of crucible, lid + 101.68 g residue after 3rd heating 101.05 g 101.01 g Data Analysis .Use your data to determine the experimental mass percent of oxygen in...
A sample of 57 research cotton samples resulted in a sample average percentage elongation of 8.16 and a sample standard deviation of 1.45. Calculate a 95% large-sample CI for the true average percentage elongation u. (Round your answers to three decimal places What assumptions are you making about the distribution of percentage elongation? We assume the distribution of percentage elongation is normal with the value of o known. We make no assumptions about the distribution of percentage elongation. We assume...
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