Quality control is maintained in a factory with thehelp of mean X and standard deviation o charts. Ten items arechosen in every sample, 18 sampies in all were chosen when EFDetermine 3o limits for X and owas 595 8 and Eo was 8:28.charts. You may use the following factors for finding 3, limits,

Answered: Image /qna-images/answer/63b43b1d-5ea0-4bdc-abc2-81d934e3cbef.jpg

Answered: Quality control is maintained in a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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The mean grade in the Physics examination was 73 and the standard deviation was 8. Determine the following: a. The standard scores corresponding to a grade of 86. b. This grade of the student whose standards score is -0.8
The ages of the 5 officers for a school club are 18, 18, 17, 16, and 15. The proportion of officers who are younger than 18 is 0.6. The table displays all possible samples of size 2 and the corresponding proportion for each sample. Using the proportions in the table, is the sample proportion an unbiased estimator? Yes, the sample proportions are calculated using samples from the population. Yes, the mean of the sample proportions is 0.6, which is the same as the population proportion. No, 0.6 is not one of the possible sample proportions. No, 70% of the sample proportions are less than or equal to 0
You want to estimate the mean number of friends for all Facebook users. How many users must be in the sample if you want to be 95% confident that the sample mean is within seven friends of the population mean? Assume the standard deviation is 53.
The tallest living man at one time had a height of 243 cm. The shortest living man at that time had a height of 127.5 cm. heights of men at that time had a mean of 170.52 cm and a standard deviation of 6.62. Which of these two men had the height that was more extreme? Use z scores
A large chemistry course took their final exam. The mean was 75 with a standard deviation of 8. c. What proportion of people scored in the A range (90 or above)?d. What proportion of people failed the exam (60 or below)?
Here are some summary statistics for last years basketball team scoring output: lowest Score=26 points,mean= 53 points,Median=47 points,Range=89 points,IQR=45, Q1=21 standard Deviation=8 points. Between what two values are the middle 50% of scores found? Choose the best answer below: A. 26 and 115 B. 11.75 and 35.25 C. 53 and 47 D. 13.25 and 3975 E. 21 and 66
A manufacturer of bolts has a quality-control policy that requires it to destroy any bolts that are more than 4 standard deviations from the mean. The quality-control engineer knows that the bolts coming off the assembly line have mean length of 15 cm with a standard deviation of 0.05 cm. For what lengths will a bolt be destroyed? Select the correct choice below and fillin the answer box(es) to complete your choice. (Round to one decimal place as needed.) O A. A bolt will be destroyed if the length is less than cm. O B. A bolt will be destroyed if the length is greater than cm. OC. A bolt will be destroyed if the length is between cm and om O D. A bolt will be destroyed if the length is less than cm or greater than
This looks like another problem. Read carefully. Sergio is doing a long hike and is carefully calculating his pack weight. An energy bar has mean weight 1.71 ounces and standard deviation 0.037. The weights of the bars are independent. A juice box has mean weight 7.1 ounces and standard deviation 0.25. The weights of the juice boxes are independent. If he takes 3 energy bars and 5 juice boxes, what will be the MEAN of the total weight in pounds from these items? Hint: If W is the weight in ounces, then W/16 is the weight in pounds.
The mean score for first exam in your first organic chemistry class (section A) was 60, with a standard deviation of 5. Your score on the exam was 70. A. How many standard deviations above the mean is your score?
To celebrate the end of final exams you and friends head to a favorite downtown restaurant. You find a street parking spot with a maximum of two hours. If you stay longer than two hours, you risk having your car towed away. No one has a watch or cellphone but you remember that the average time you spent at the same restaurant over your previous 16 visits is 1.5 hours, and you estimate the sample standard deviation to be about 20 minutes. You also need to factor in that it takes 8 minutes to walk to the restaurant and 8 minutes to walk back to your car (you are very certain about these two durations). (a) One of your friends is really worried that you won’t get back to the car in time and so the car might be towed away! Does your friend have good reason to be worried? Test at a 5% significance level whether the mean total time will be less than two hours. (b) You decide to leave the car parked at the street spot but it gets towed. What type of error have you committed?
A group of adult males has foot lengths with a mean of 28.23 cm and a standard deviation of 1.27 cm. Use the range rule of thumb to identify the limits separating values that are significantly low or significantly high. Is the adult male foot length of 25.5 cm significantly low or significantly high? Explain. Significantly low values are Significantly high values are Select the correct choice below and fill in the answer box(es) to complete your choice.

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Quality control is maintained in a factory with the help of mean X and standard deviation o charts. Ten items are chosen in every sample, 18 sampies in all were chosen when EF was 595'8 and Eo was 8'28. Determine 3 limits for and a charts. You may use the following factors for finding 3o limits,