Required informationOf all the weld failures in a certain assembly, 89% of them occur in the weld metal itself, and the remaining 11% occur in thebase metal. A sample of 20 weld failures is examined.Find the standard deviation of the number of base metal failures.Numeric Response

Answered: Image /qna-images/answer/15e0a647-0f34-4182-bdae-4dba340e627b.jpg

Answered: Required information. Of all the weld…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

It is advertised that the average braking distance for a small car traveling at 65 miles per hour equals 123 feet. A transportation researcher wants to determine if the statement made in the advertisement is false. She randomly test drives 33 small cars at 65 miles per hour and records the braking distance. The sample average braking distance is computed as 116 feet. Assume that the population standard deviation is 21 feet. (You may find it useful to reference the appropriate table: z table or t table) a. State the null and the alternative hypotheses for the test. multiple choice 1 H0: μ = 123; HA: μ ≠ 123 H0: μ ≥ 123; HA: μ < 123 H0: μ ≤ 123; HA: μ > 123 b. Calculate the value of the test statistic and the p-value. (Negative value should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answer to 2 decimal places.) Find the p-value. multiple choice 2 p-value 0.10 p-value < 0.01 0.01…
Why do you need to know the sampling distribution of the difference between two sample means in order to perform a hypothesis test to compare two population means?
The following table gives you the horsepower for each of the seven vacuum cleaners tested. Determine the range and standard sample deviation. 2.75 2.25 1.75. 1.25 1.75 Range=? S=?
You would like to check and see if the agar recipe you use has an effect on bacterial growth. You make five plates with agar A and five plates with agar B. You inoculate the plates and incubate them together for 24 hours. You take out the plates and count the colonies on each. You accumulate the following results. Agar A: average number of colonies = 24.52 Standard Deviation for A = 3.34 Agar B: average number of colonies = 18.76 Standard Deviation for B = 4.61 The teale value you calculated is 2.262. What is the value of terit?
The table below shows the grades of the 20 students of a martial arts class. There are three grades: satisfactory(S), unsatisfactory(U), and incomplete(I). Question: Which measure of variability is appropriate for the variable? IQV Range IQR Standard deviation
A student studying statistics wants to look at data for his favorite sport, American football. He collects data on the lengths of 100 field goals from various games over several seasons. Would it be more appropriate to find a sample standard deviation or population standard deviation in this situation? Select the correct answer below: A. Sample standard deviation B. Population standard deviation
Compute the standard deviation of each of the two data sets A and B below. Then subtract the Standard Deviation of the data set A from the Standard Deviation of data set B. State your result as a decimal value with one digit after the decimal point (e.g. 3.0). Data set A: 1, 2, 3, 4, 5, 6 Data set B: 21, 22, 23, 24, 25, 26
Twenty-five randomly selected students were asked the number of movies they watched the previous week. The results are as follows: # of movies Frequency0 51 92 63 44 1Table 2.83 a. Find the sample mean x¯.b. Find the approximate sample standard deviation, s
An engineer wishes to determine the width of a particular electronic component. If she knows that the standard deviation is 2.3 mm, how many of these components should she consider to be 99% sure of knowing the mean will be within ±0.2±0.2 mm? 23 4642 878 30 716
A simple random sample of 100 observations was taken from a large population. The sample mean and the variance was determined to be 80 and 144 respectively. The standard error of the sample mean is O A. 14.4 O B. 0.80 O C. 1.44 D. 1.20
3. Let X1, X2, ..., Xn be a random sample from the population N(µz,0²) and Y1, Y2,...,Ym a random sample from the population N(µy, o2), where both means (z and Hy) are assumed known. Note that the two distributions have a common variance of o². (a) If the X's and Y's are independent, show that the MLE for the common variance is: E (Xi - H2)² +E(Y; - Hy)? n+ m (b) Is the MLE found above unbiased for o2?
The distribution is used when the population distribution is normal and Select one: O a. Both a and b are correct. O b. When the sample size is more than 30. O c. When sample size is less than 30 and the population standard deviation is not known. O d. The population standard deviation is also known.

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS

Required information. Of all the weld failures in a certain assembly, 89% of them occur in the weld metal itself, and the remaining 11% occur in the base metal. A sample of 20 weld failures is examined. Find the standard deviation of the number of base metal failures. Numeric Response