Homework Answers
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Area = 0.80
Mean = 50
Standard deviation = 5
80th Percentile is 54.208106
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E A normal population has mean l = 50 and standard deviation 0 = 5. What...
A sample of size 45 will be drawn from a population with mean 53 and standard...
A sample of size 45 will be drawn from a population with mean 53 and standard deviation 11. Use the T1-84 Plus calculator. (a) Is it appropriate to use the normal distribution to find probabilities for x? (b) Find the probability that will be between 54 and 55. Round the answer to at least four decimal places (c) Find the 47th percentile of x. Round the answer to at least two decimal places. Yes (a) Is it appropriate to use...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean 5 H: mean 5 A test is performed with a sample o...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean 5 H: mean 5 A test is performed with a sample of size 25. The sample mean was 4.79 and the population standard deviation is 1.2. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the Pvalue. Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer. Your Answer: Answer Question 5 (0.5 points) Consider the following hypotheses:...
A normal population has mean = 9 and standard deviation -5. (a) What proportion of the...
A normal population has mean = 9 and standard deviation -5. (a) What proportion of the population is less than 19? (b) What is the probability that a randomly chosen value will be greater than 4? Round the answers to four decimal places. Part 1 of 2 The proportion of the population less than 19 is Part 2 of 2 The probability that a randomly chosen value will be greater than 4 is : A normal population has mean =...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean= 5 Hi: mean< 5 A test is performed with a...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean= 5 Hi: mean< 5 A test is performed with a sample of size 25. The sample mean was 4.79 and the population standard deviation is 1.2. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the P-value. Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer. Your Answer: Answer Question 5 (0.5 points) Consider the following hypotheses:...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean= 5 Hi: mean< 5 A test...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean= 5 Hi: mean< 5 A test is performed with a sample of size 25. The sample mean was 4.79 and the population standard deviation is 1.2. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the value. Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer. Your Answer: Answer Question 7 (0.5 points) Consider the following hypotheses:...
1 2 3 4 5 6 7 Question 6 of 8 (1 point) Attempt 2 of...
1 2 3 4 5 6 7 Question 6 of 8 (1 point) Attempt 2 of Unlimited 6.2 Section Exercise sample of size 7 will be drawn from a normal population with mean 63 and standard deviation 15. Use the TI-84 Plus calculator. a) Is it appropriate to use the normal distribution to find probabilities for x? (b) Find the probability that I will be between 53 and 73. Round the answer to at least four decimal places. (e) Find...
A normal population has a mean of 18 and a standard deviation of 5. a. Compute...
A normal population has a mean of 18 and a standard deviation of 5. a. Compute the z value associated with 24. (Round your answer to 2 decimal places.) 2 1.20 b. What proportion of the population is between 18 and 24? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.) Proportion c. What proportion of the population is less than 13? (Round z-score computation to 2 decimal places and your final answer to...
A normal population has a mean of 19 and a standard deviation of 5. a. Compute...
A normal population has a mean of 19 and a standard deviation of 5. a. Compute the z value associated with 22. (Round your answer to 2 decimal places.) Z 0.60| b. What proportion of the population is between 19 and 22? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.) Proportion c. What proportion of the population is less than 14? (Round z-score computation to 2 decimal places and your final answer to...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean = 5 H1: mean < 5...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean = 5 H1: mean < 5 A test is performed with a sample of size 25. The sample mean was 4.68 and the population standard deviation is 1.2. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the P-value. Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer. Your Answer: Answer Question 5 (0.5 points) Consider the...
A normal population has a mean of 18.3 and a standard deviation of 5. Refer to...
A normal population has a mean of 18.3 and a standard deviation of 5. Refer to the table in Appendix B.1 a. Compute the z-value associated with 25.0. (Round the final answer to 2 decimal places.) z = b. What proportion of the population is between 18.3 and 25.0? (Round z-score computation to 2 decimal places and the final answer to 4 decimal places.) Proportion c. What proportion of the population is less than 18.0? (Round z-score computation to 2...
A sample of size 45 will be drawn from a population with mean 53 and standard deviation 11. Use the T1-84 Plus calculator. (a) Is it appropriate to use the normal distribution to find probabilities for x? (b) Find the probability that will be between 54 and 55. Round the answer to at least four decimal places (c) Find the 47th percentile of x. Round the answer to at least two decimal places. Yes (a) Is it appropriate to use...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean 5 H: mean 5 A test is performed with a sample of size 25. The sample mean was 4.79 and the population standard deviation is 1.2. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the Pvalue. Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer. Your Answer: Answer Question 5 (0.5 points) Consider the following hypotheses:...
A normal population has mean = 9 and standard deviation -5. (a) What proportion of the population is less than 19? (b) What is the probability that a randomly chosen value will be greater than 4? Round the answers to four decimal places. Part 1 of 2 The proportion of the population less than 19 is Part 2 of 2 The probability that a randomly chosen value will be greater than 4 is : A normal population has mean =...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean= 5 Hi: mean< 5 A test is performed with a sample of size 25. The sample mean was 4.79 and the population standard deviation is 1.2. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the P-value. Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer. Your Answer: Answer Question 5 (0.5 points) Consider the following hypotheses:...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean= 5 Hi: mean< 5 A test is performed with a sample of size 25. The sample mean was 4.79 and the population standard deviation is 1.2. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the value. Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer. Your Answer: Answer Question 7 (0.5 points) Consider the following hypotheses:...
1 2 3 4 5 6 7 Question 6 of 8 (1 point) Attempt 2 of Unlimited 6.2 Section Exercise sample of size 7 will be drawn from a normal population with mean 63 and standard deviation 15. Use the TI-84 Plus calculator. a) Is it appropriate to use the normal distribution to find probabilities for x? (b) Find the probability that I will be between 53 and 73. Round the answer to at least four decimal places. (e) Find...
A normal population has a mean of 18 and a standard deviation of 5. a. Compute the z value associated with 24. (Round your answer to 2 decimal places.) 2 1.20 b. What proportion of the population is between 18 and 24? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.) Proportion c. What proportion of the population is less than 13? (Round z-score computation to 2 decimal places and your final answer to...
A normal population has a mean of 19 and a standard deviation of 5. a. Compute the z value associated with 22. (Round your answer to 2 decimal places.) Z 0.60| b. What proportion of the population is between 19 and 22? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.) Proportion c. What proportion of the population is less than 14? (Round z-score computation to 2 decimal places and your final answer to...
Question 4 (0.5 points) Consider the following hypotheses: Ho: mean = 5 H1: mean < 5 A test is performed with a sample of size 25. The sample mean was 4.68 and the population standard deviation is 1.2. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the P-value. Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer. Your Answer: Answer Question 5 (0.5 points) Consider the...
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