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8. From a population of cans of coffee marked "12 ounces," a sample of 125 cans...
answer all 21 From a population of cans of coffee marked "12 ounces." a sample of...
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21 From a population of cans of coffee marked "12 ounces." a sample of 25 cans is selected and the contents of each can are weighed. The sample revealed a mean of 118 ounces with a standard deviation of 0.5 ounces. Test to see if the mean of the population is at least 12 ounces. Assume the population is normally distributed) Use a 05 level of significance. What is the value of test statistic? Not yel www.ed Point...
Question 4 (1.25 points) Soda cans of a certain kind are labeled as containing 12 ounces....
Question 4 (1.25 points) Soda cans of a certain kind are labeled as containing 12 ounces. A quality control inspector believes that the mean weight may be more than this, so she performs a hypothesis test of Ho: mean = 12 versus Hy: mean > 12. She does not reject the null hypothesis. Which of the following is an appropriate conclusion? " There is not enough evidence to conclude that the mean weight of the soda in the cans is...
2. A machine that fills beverage cans is supposed to put 12 ounces of beverage in...
2. A machine that fills beverage cans is supposed to put 12 ounces of beverage in each can. Following are the amounts measured in a simple random sample of eight cans. 11.96 12.10 12.04 12.13 11.98 12.05 11.91 12.03 A dotplot of the sample data suggests that the population is approximately normal. Perform a hypothesis test to determine whether the mean volume differs from 12 ounces. Use the a= 0.05 level of significance. (a) State the null and alternate hypotheses....
Soda six-packs Most soda cans list the volume of soda as 12 fluid ounces. As with...
Soda six-packs Most soda cans list the volume of soda as 12 fluid ounces. As with all process, some variation occurs when filling soda cans. Suppose that a company knows this and tries to over-fill cans a bit, so that the actual volume of soda in a can follows a normal distribution with mean 12.1 fluid ounces and standard deviation .15 fluid ounces. a) What proportion of soda cans filled by this process will contain less than 12 fluid ounces?...
Question 3 (1.25 points) Soda cans of a certain kind are labeled as containing 12 ounces....
Question 3 (1.25 points) Soda cans of a certain kind are labeled as containing 12 ounces. A quality control inspector believes that the mean weight may be more than this, so she performs a hypothesis test of Ho: mean = 12 versus H1: mean > 12. She rejects the null hypothesis. Which of the following is an appropriate conclusion? There is not enough evidence to conclude that the mean weight of the soda in the cans is greater than 12....
Question 3 (1.25 points) Soda cans of a certain kind are labeled as containing 12 ounces. A quality control inspect...
Question 3 (1.25 points) Soda cans of a certain kind are labeled as containing 12 ounces. A quality control inspector believes that the mean weight may be more than this, so she performs a hypothesis test of Ho: mean = 12 versus Hy: mean > 12. She rejects the null hypothesis. Which of the following is an appropriate conclusion? nWe conclude that the mean weight of soda in the cans is greater than 12. There is not enough evidence to...
A company claims that the mean volume of the soda in its cans is 12.0 ounces....
A company claims that the mean volume of the soda in its cans is 12.0 ounces. In a random sample of 8 of its cans, the mean is found to be 12.1 ounces. Based on past research, the population standard deviation is assumed to be 0.1 ounces. Test the claim that the mean is 12.0 ounces. Use a 0.01 level of significance. a) State the null and alternative hypotheses. b) Find the value of the test statistic. Use the appropriate...
] A machine that fills beverage cans is supposed to put 12 ounces of beverage in...
] A machine that fills beverage cans is supposed to put 12 ounces of beverage in each can. The following table shows the results when ten randomly selected cans are sampled. 11.77 11.85 11.87 11.96 12.03 12.03 12.09 12.18 12.28 12.36 (a) Compute the sample standard deviation (from the calculator). (b) Perform a hypothesis test to determine whether the standard deviation is less than 0.2 ounce at the 5% significance level
Problem 4. Two coffee-packing machines, producing "100-gramms coffee cans" are tested. Some cans were opened and...
Problem 4. Two coffee-packing machines, producing "100-gramms coffee cans" are tested. Some cans were opened and amount of the coffee inside was precisely weighted. Sample of 8 cans packed by first machine resulted in mean 98.71 and standard deviation 2.38; Sample of 12 cans packed by second machine resulted in mean 101.87 and standard deviation Test the hypothesis at 5% significance level: 4.32. (a) H, : μ 14 against the alternative Hi :4 < A-Find P-value. (b) HO:14 100 against...
Coffee beans from around the world are used to make coffee. Do coffee tasters prefer coffee...
Coffee beans from around the world are used to make coffee. Do coffee tasters prefer coffee beans from particular countries? To investigate this question, a researcher collected coffee aroma ratings based on Arabica coffee beans from two countries, Brazil and Costa Rica. The coffee aroma ratings are summarized in the table below. Each sample contains 10 coffee bean ratings. Sample Standard Deviation n Sample Mean Costa Rica 10 7.74 0.26 Brazil 10 7.54 0.25 We will assume that the aroma...
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21 From a population of cans of coffee marked "12 ounces." a sample of 25 cans is selected and the contents of each can are weighed. The sample revealed a mean of 118 ounces with a standard deviation of 0.5 ounces. Test to see if the mean of the population is at least 12 ounces. Assume the population is normally distributed) Use a 05 level of significance. What is the value of test statistic? Not yel www.ed Point...
Question 4 (1.25 points) Soda cans of a certain kind are labeled as containing 12 ounces. A quality control inspector believes that the mean weight may be more than this, so she performs a hypothesis test of Ho: mean = 12 versus Hy: mean > 12. She does not reject the null hypothesis. Which of the following is an appropriate conclusion? " There is not enough evidence to conclude that the mean weight of the soda in the cans is...
2. A machine that fills beverage cans is supposed to put 12 ounces of beverage in each can. Following are the amounts measured in a simple random sample of eight cans. 11.96 12.10 12.04 12.13 11.98 12.05 11.91 12.03 A dotplot of the sample data suggests that the population is approximately normal. Perform a hypothesis test to determine whether the mean volume differs from 12 ounces. Use the a= 0.05 level of significance. (a) State the null and alternate hypotheses....
Question 3 (1.25 points) Soda cans of a certain kind are labeled as containing 12 ounces. A quality control inspector believes that the mean weight may be more than this, so she performs a hypothesis test of Ho: mean = 12 versus H1: mean > 12. She rejects the null hypothesis. Which of the following is an appropriate conclusion? There is not enough evidence to conclude that the mean weight of the soda in the cans is greater than 12....
Question 3 (1.25 points) Soda cans of a certain kind are labeled as containing 12 ounces. A quality control inspector believes that the mean weight may be more than this, so she performs a hypothesis test of Ho: mean = 12 versus Hy: mean > 12. She rejects the null hypothesis. Which of the following is an appropriate conclusion? nWe conclude that the mean weight of soda in the cans is greater than 12. There is not enough evidence to...
Problem 4. Two coffee-packing machines, producing "100-gramms coffee cans" are tested. Some cans were opened and amount of the coffee inside was precisely weighted. Sample of 8 cans packed by first machine resulted in mean 98.71 and standard deviation 2.38; Sample of 12 cans packed by second machine resulted in mean 101.87 and standard deviation Test the hypothesis at 5% significance level: 4.32. (a) H, : μ 14 against the alternative Hi :4 < A-Find P-value. (b) HO:14 100 against...
Coffee beans from around the world are used to make coffee. Do coffee tasters prefer coffee beans from particular countries? To investigate this question, a researcher collected coffee aroma ratings based on Arabica coffee beans from two countries, Brazil and Costa Rica. The coffee aroma ratings are summarized in the table below. Each sample contains 10 coffee bean ratings. Sample Standard Deviation n Sample Mean Costa Rica 10 7.74 0.26 Brazil 10 7.54 0.25 We will assume that the aroma...
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