34. The Empirical Rule The distribution of the length of boltshas a bell shape with a mean of 4 inches and a standarddeviation of 0.007 inch.(a) About 68% of bolts manufactured will be between whatlengths?(b) What percentage of bolts will be between 3.986 inches and4.014 inches?(c) If the company discards any bolts less than 3.986 inches orgreater than 4.014 inches, what percentage of boltsmanufactured will be discarded?(d) What percentage of bolts manufactured will be between4.007 inches and 4.021 inches?

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Answered: 34. The Empirical Rule The distribution…

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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28) A coffee machine dispenses coffee into a 12-ounce cup. The amounts of coffee dispensed into the cup are normally distributed with a standard deviation of 0.02 ounce.You can allow the cup to overfill at most 2% of the time. What is the greatest amount should you set as the mean amount of coffee to be dispensed? Round final answer to the third decimal place.
1. According to a website the mean number of apps on a smartphone in the United States is 90. Assume the number of apps is normally distributed with a mean 90 and standard deviation 25. On the axis above, do parts A-F. A. Sketch a normal curve. (3 pt) B. Label the axis with correct letter (z, x or x) to represent a normal distribution. (3pts) C. Label the axis with the mean value (given in the problem). (2pts) D. Label the axis with the other 6 values (the values that represent 1,2, and 3 standard deviations away from the mean). (6pts) E. Mark the value of 85 on the axis and write 85 under the axis. (2pts) F. Shade the area under the curve that corresponds to "less than 85". (2pts) G. Find the probability that a randomly selected smartphone will have less than 85 apps on it. Round to 4 decimal places. Show your work or what you enter into a calculator. (8 pts)
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How can I use excel to calculate c?
A population is normally distributed with mean 18.6 and standard deviation 1.4. (a) Find the intervals representing one, two, and three standard deviations of the mean. one standard deviation (smaller value) (larger value) two standard deviations (smaller value) (larger value) three standard deviations (smaller value) (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 %
14.What is the range of the center 50% of the batting average? 13. How high most players batting average be to fall in the top 25%? 16. What percentage of the batting averages are below 0.95? 15. What percentage of the batting averages fall between 0.228 and 0.294?
7. Calculate -scores for the following raw scores taken from a population with a mean of 100 and standard deviation of 16: 112, 109, 56, 88, 135, 99 Answer: 2 = 0.75, 0.56, -2.75, -0.75, 2.19, -0.06 show work for these please
The graph illustrates the distribution of test scores taken by College Aigebra students. The maximum possible score on the test was 140, while the mean score was 76 and the standard deviation was 14. 34 48 62 76 90 104 Distribution of Test Scores What is the approximate percentage of students who scored between 76 and 90 on the test? What is the approximate percentage of students who scored higher than 104 on the test? What is the appraximate percentage of students who scored higher than 118 on the test? What is the approximate percentage of students who scored between 48 and 104 on the test?
"The number of accidents..." please help with i, ii, and iii
3. A data set is normally distributed with a mean of 50 and a standard deviation of 8. What percent of data are (a) less than 60? (b) greater than 36? (c) greater than 56? (d) between 46 and 62?
17. A set of data has a normal distribution with a mean of 36 and a standard deviation of 4. What percent of the data are within the interval from 32 to 40?

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