Question

In: Statistics and Probability

To find the standard deviation of the diameter of wooden dowels, the manufacturer measures 19 randomly...

To find the standard deviation of the diameter of wooden dowels, the manufacturer measures 19 randomly selected dowels and finds the standard deviation of the sample to be s = 0.16. Find the 95% confidence interval for the population standard deviation σ

Solutions

Expert Solution

CI for sample standard deviation is

(0.1209, 0.2366)

Dear student,
I am waiting for your feedback. I have given my 100% to solve your queries. If you satisfied with my answer then please please like this.
Thank You


Related Solutions

To find the standard deviation of the diameter of wooden​ dowels, the manufacturer measures 19 randomly...
To find the standard deviation of the diameter of wooden​ dowels, the manufacturer measures 19 randomly selected dowels and finds the standard deviation of the sample to be s equals =0.16. Find the​ 95% confidence interval for the population standard deviation sigma σ. Round to two decimal places. A. 0.13 less than < sigma σ less than <0.22 B. 0.15 less than < sigma σ less than <0.21 C. 0.11 less than < sigma σ less than <0.25 D. 0.12...
the standard deviation of the diameter of 28 oranges was 0.34 inch. find the 99% confidence...
the standard deviation of the diameter of 28 oranges was 0.34 inch. find the 99% confidence interval of the true standard deviation of the diameter of the orages.
The mean and standard deviation for the diameter of a certain type of steel rod are...
The mean and standard deviation for the diameter of a certain type of steel rod are mu = 0.503 cm and sigma = 0.03cm. Let X denote the average of the diameters of a batch of 100 such steel rods. The batch passes inspection if Xbar falls between 0.495 and 0.505cm. 1. What is the approximate distribution of Xbar? Specify the mean and the variance and cite the appropriate theorem to justify your answer. 2. What is the approximate probability...
With respect to performance measures, the use of the standard deviation of portfolio returns is a...
With respect to performance measures, the use of the standard deviation of portfolio returns is a distinguishing feature of the: A. Sharpe ratio B. Treynor ratio C. beta measure D. Jensen's alpha
Calculate true standard deviation of the diameter of a large batch of tires to a confidence...
Calculate true standard deviation of the diameter of a large batch of tires to a confidence level of 99% if the measured standard deviation in the diameter for a sample of 30 tires is 0.0795 cm.
The diameter of holes for cable harness is known to have a standard deviation of 0.01...
The diameter of holes for cable harness is known to have a standard deviation of 0.01 in. A random sample of size 10 yields an average diameter of 1.5045 in. Use α=0.01 to: a. Test the hypothesis that the true mean whole diameter equal 1.5 in. b. What sample size would be necessary to detect a true mean hole diameter of 1.505 in. with probability of at least 0.95? c. What is the type II error if the true mean...
Find the mean, median, mode, and standard deviation (round standard deviation to the nearest whole number)...
Find the mean, median, mode, and standard deviation (round standard deviation to the nearest whole number) for the following SAMPLE set of test scores.             90 85 75 70 80 80 Using the above information and the Empirical Rule: What percent of scores would you expect to fall between 66 and 87?                    ____________ 68% of the time you would expect scores between what two values?                     ____________ Determine the z-score for a test score of 64.                                                             ____________...
Find the Standard Deviation in Java: Use Arrays and Looping. Calculate the Standard Deviation once you...
Find the Standard Deviation in Java: Use Arrays and Looping. Calculate the Standard Deviation once you have the m numbers in an Array of size m. *Don't use different methods
A population has a mean of 50 and a standard deviation of 19. If a random...
A population has a mean of 50 and a standard deviation of 19. If a random sample of 64 is taken, what is the probability that the sample mean is each of the following? a. Greater than 52 b. Less than 51 c. Less than 48 d. Between 46.5 and 53.5 e. Between 50.8 and 51.2
An ecologist randomly samples 19 plants of a specific species and measures their heights. He finds...
An ecologist randomly samples 19 plants of a specific species and measures their heights. He finds that this sample has a mean of 15 cm and a standard deviation of 4 cm. If we assume that the height measurements are normally distributed, find a 90% confidence interval for the mean height of all plants of this species. Then complete the table below.Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary,...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT