The propagation of fatigue cracks in various aircraft parts has been the subject of extensive study in recent years. The accompanying data consists of propagation lives (flight hours/104) to reach agiven crack size in fastener holes intended for use in military aircraft.0.726 0.844 0.873 0.915 0.926 0.932 0.9751.037 1.049 1.087 1.123 1.137 1.151 1.2281.0091.356USE SALT(a) Compute and compare the values of the sample mean x and median X. (Round your mean to four decimal places.)x =x =flight hours/104flight hours/104(b) By how much could the largest sample observation be decreased without affecting the value of the median? (Enter your answer to three decimal places.)flight hours/104

Part (a): Compute the Sample Mean and MedianCalculate the Sample Mean (xˉ)The sample mean is the…

Answered: The propagation of fatigue cracks in…

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 incubation time for a breed of chicks is normally distributed with a mean of 29 days and standard deviation of approximately 3 days. Look at the figure below and answer the following questions. If 1000 eggs are being incubated, how many chicks do we expect will hatch in the following time periods? (Note: In this problem, let us agree to think of a single day or a succession of days as a continuous interval of time. Assume all eggs eventually hatch.) (a) in 23 to 35 days __ chicks(b) in 26 to 32 days __chicks
Please answer question b.
Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type. 5.5 7.2 7.3 6.3 8.1 6.8 7.0 7.1 6.8 6.5 7.0 6.3 7.9 9.0 8.9 8.7 7.8 9.7 7.4 7.7 9.7 7.9 7.7 11.6 11.3 11.8 10.7 The data below give accompanying strength observations for cylinders. 6.5 5.8 7.8 7.1 7.2 9.2 6.6 8.3 7.0 8.4 7.1 8.1 7.4 8.5 8.9 9.8 9.7 14.1 12.6 11.5 Prior to obtaining data, denote the beam strengths by X,, . Xm and the cylinder strengths by Y,, . Y. Suppose that the X,'s constitute a random sample from a distribution with mean u, and standard deviation o, and that the Y's form a random sample (independent of the X's) from another distribution with mean H2 and standard deviation (a) Use rules of expected value to show that X – Y is an unbiased estimator of µ, - µ. E(X – Y) E(X) – E(Y) = H1 - H2 nm E(X - Y) (E) – E(Y)* = l1 - 42 E(X - Y) = nm( E(X) – E(Yn) = H1 - H2 E(X – Y) E(X - Y) = V E(X) – E(Y) = µ1 – H2 E(X) – E(Y) = µ1 - 42 Calculate the estimate for the given data.…
The incubation time for a breed of chicks is normally distributed with a mean of 29 days and standard deviation of approximately 3 days. Look at the figure below and answer the following questions. If 1000 eggs are being incubated, how many chicks do we expect will hatch in the following time periods? (Note: In this problem, let us agree to think of a single day or a succession of days as a continuous interval of time. Assume all eggs eventually hatch.) (a) in 23 to 35 days chicks(b) in 26 to 32 days chicks(c) in 29 days or fewer chicks(d) in 20 to 38 days chicks
Section 6.2 * 36e Coronary bypass surgy: Care Pesearch and Quality reported that 53% of people who had Coronary bypass Surgery in a recent were over the age of 65. ODR 15 The Agency for Health- year Coronary bypass patients are what is the mean number oE people over the age 65 in a Sample of 15 Coronary bypass patients? e y k d V. b C alt V
9.17
Explorine 40 batches of data were collected and are reported as below. 7 A manufacturer of shock absorbers is interested in implementing a quality control system to monitor its production process. It has decided to record the number of non-conforming absorbers in each production batch of size 100. During 40 days of production, 6. 9. 7. 14 12 12 4. 6. 7. 8. 11 3 6. 8 4. 8. 7. 6. 4. 4 5. 8. 11 11 17 18 12 15 17 13 13 19 19 Construct a frequency distribution.
Number 101 part A, B, and C
Suppose that delivery cars arrive randomly at a restaurant with an exponentially distributed inter-arrival times with a mean of 0.1 hours. It is given that it takes a restaurant employee 4 minutes - on average to prepare the order with a standard deviation of 2 minutes Spe that delivery drivers are paid $10 per hour. Calculate the average cost per hour of driverS waiting for their orders to be prepared. Select one: O A. 8.33 O B. 8.25 O C. 12.50 O D. None O E. 8 Next page

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