A population is normally distributed with mean 17.8 and standard deviation 1.7. (a) Find the intervals...
A population is normally distributed with mean 17.8 and standard deviation 1.7. (a) Find the intervals representing one, two, and three standard deviations of the mean. one standard deviation Correct: Your answer is correct. (smaller value) Correct: Your answer is correct. (larger value) two standard deviations Correct: Your answer is correct. (smaller value) Correct: Your answer is correct. (larger value) three standard deviations Correct: Your answer is correct. (smaller value) Correct: Your answer is correct. (larger value) (b) What percent of the data lies in each of the intervals in part (a)? (Round your answers to two decimal places.) one standard deviation . % two standard deviations % three standard deviations %
My question is how do i find its standard deviation for part b. i am lost in that part and how do i get it to a percent.
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A population is normally distributed with mean 17.8 and standard
deviation 1.7. (a) Find the intervals...
AM You are given the sample mean and the population standard deviation. Use this information to...
AM You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals. A random sample of 35 home theater systems has a mean price of $144.00. Assume the population standard deviation is $15.60. Construct a 90% confidence interval for the population mean. The 90% confidence...
For the following situation, find the mean and standard deviation of the population. List all samples...
For the following situation, find the mean and standard deviation of the population. List all samples (with replacement) of the given size from that population and find the mean of each. Find the mean and standard distribution and compare them with the mean and standard deviation of the population. The scores of three students in a study group on a test are 97, 94, 95. Use a sample size of 3. The mean of the population is Round to two...
1. For a normally distributed population with a mean of and a standard deviation of a....
1. For a normally distributed population with a mean of
and a standard deviation of
a. Draw the bell curve going out three standard deviations on
both directions.
b. Find the Z-score for
c. Find the Z-score for
d. Find the Z-score for
e. Find the probability of getting a score greater than 21,
f. Find the probability of getting a score less than 9,
g. Find the probability of getting a score between 13...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 72 inches and standard...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 72 inches and standard deviation 3 inches. (a) What is the probability that an 18-year-old man selected at random is between 71 and 73 inches tall? (Round your answer to four decimal places.) (b) If a random sample of twenty-three 18-year-old men is selected, what is the probability that the mean height x is between 71 and 73 inches? (Round your answer to four decimal places.) (c) Compare...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 65 inches and standard...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 65 inches and standard deviation 4 inches. (a) What is the probability that an 18-year-old man selected at random is between 64 and 66 inches tall? (Round your answer to four decimal places.) (b) If a random sample of twelve 18-year-old men is selected, what is the probability that the mean height x is between 64 and 66 inches? (Round your answer to four decimal places.) (c) Compare...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 73 inches and standard...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 73 inches and standard deviation 2 inches. (a) What is the probability that an 18-year-old man selected at random is between 72 and 74 inches tall? (Round your answer to four decimal places.) (b) If a random sample of eleven 18-year-old men is selected, what is the probability that the mean height x is between 72 and 74 inches? (Round your answer to four decimal places.) (c) Compare...
You are given the sample mean and the population standard deviation. Use this information to construct...
You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence ntervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals A random sample of 45 home theater systems has a mean price of $138.00. Assume the population standard deviation is 516.40. Construct a 90% confidence interval for the population mean. The 90% confidence interval...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 67 inches and standard...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 67 inches and standard deviation 4 inches. (a) What is the probability that an 18-year-old man selected at random is between 66 and 68 inches tall? (Round your answer to four decimal places.) 0.2611 (b) If a random sample of twenty-seven 18-year-old men is selected, what is the probability that the mean height x is between 66 and 68 inches? (Round your answer to four decimal places.) (c)...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 67 inches and standard...
Suppose the heights of 18-year-old men are approximately normally distributed, with mean 67 inches and standard deviation 3 inches. (a) What is the probability that an 18-year-old man selected at random is between 66 and 68 inches tall? (Round your answer to four decimal places.) (b) If a random sample of twenty-five 18-year-old men is selected, what is the probability that the mean height x is between 66 and 68 inches? (Round your answer to four decimal places.) (c) Compare...
A population is normally distributed with mean 36.3 and standard deviation 0.5. Find the following probability....
A population is normally distributed with mean 36.3 and standard deviation 0.5. Find the following probability. (Round your answer to four decimal places.) p( 36.3 < x < 36.8 )
AM You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals. A random sample of 35 home theater systems has a mean price of $144.00. Assume the population standard deviation is $15.60. Construct a 90% confidence interval for the population mean. The 90% confidence...
For the following situation, find the mean and standard deviation of the population. List all samples (with replacement) of the given size from that population and find the mean of each. Find the mean and standard distribution and compare them with the mean and standard deviation of the population. The scores of three students in a study group on a test are 97, 94, 95. Use a sample size of 3. The mean of the population is Round to two...
1. For a normally distributed population with a mean of
and a standard deviation of
a. Draw the bell curve going out three standard deviations on
both directions.
b. Find the Z-score for
c. Find the Z-score for
d. Find the Z-score for
e. Find the probability of getting a score greater than 21,
f. Find the probability of getting a score less than 9,
g. Find the probability of getting a score between 13...
You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence ntervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If convenient, use technology to construct the confidence intervals A random sample of 45 home theater systems has a mean price of $138.00. Assume the population standard deviation is 516.40. Construct a 90% confidence interval for the population mean. The 90% confidence interval...
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