101112123Ages of Proofreaders At a large publishing company, the mean age of proofreaders is 36.2 years and the standard deviation is 3.7 years.Assume the variable is normally distributed. Round intermediate z-value calculations to two dećimal places and the final answers to at least fodecimal places.Part: 0/ 2Part 1 of 2If a proofreader from the company is randomly selected, find the probability that his or her age will be between 34 and 35.5 years.P (34 < X < 35.5) =%3DSubmit AssiNext PartO 2021 McGraw Hill LLC. All Rights Reserved. Terms of UseI Privacy Center | AcehpDIIesc23$49%&bac1234.6.78.tabertyashiftCmaltaltctrl

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Answered: Ages of Proofreaders At a large…

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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STATISTICS & PROBABILITY Direction: Solve the following problems. Round off your answer to two decimal places. Use the percentage form and include the percentage symbol (%) The length of time needed to do a particular activity is normally distributed with a mean of 2 hours and a standard deviation of 1.25 hours. What is the probability that a randomly selected student will spend 3.5 hours in doing the activity? The monthly food expenditure of a single person is 3000Php on average with a standard deviation of 300Php. Assuming that the monthly food expenditure is normally distributed, what percentage of these expenditures are between 2400Php and 4000Php? Find the area to the right of z = 1.37 Select one: A. 8.53% B. 43.45% C. 31.76% D. 47.88% Find the area between z = 0.46 and z = 2.56 Select one: A. 43.45% B. 31.76% C. 30.15% D. 97.98% Find the area between z = 0 and z = -2.03 Select one: A. 43.45% B. 47.88% C. 8.53% D. 31.76% Find the area to the left…
Calculus The height of 700 boys are found to approximately follow such a distribution, with a mean height of 148 cm and a standard deviation of 19 cm. Find the number of boys with heights between 129 cm and 167 cm.
Subject : calculas
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Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P, the 11th percentile. This is the bone density score separating the bottom 11% from the top 89%. Which graph represents P ? Choose the correct graph below. O A. O B. OD. P11 P11 P11 P11 The bone density score corresponding to P1 is (Round to two decimal places as needed.) Click to select your answer(s). APR tv MacBook Air F9 F10 LLA 20 F3 F6 F8 F4 F5 F1 F2 & #3 7 8. %24
Prob-4 The lighting department of a city has installed 2000 electric lamps with an average life of 10,000 h and a standard deviation of 500 h. After what period of lighting hours would we expect 65.54% of the lamps to fail? Assume life of lamps are normally distributed. Sol:
Directions: Determine the parameter to be tested in each situation by writing your answer on a separate sheet of paper. Translate it into symbols. 2. A newspaper article stated that students in the country take an average of 4 years to finish their undergraduate degrees. Suppose that you believe the mean time is longer, you conducted survey on 49 students. The result obtained a sample mean of 5 with a sample standard deviation of 1.2.
solve a b c
Use the population data set to answer each question. Round to the nearest hundreth. (Two decimal places) {15, 18, 19, 20, 22, 24, 24, 25, 26} Мean %D Median %D Mode Variance %3D Standard Deviation = Range : Midrange =
Complete each table and solve for the mean, variance and standard deviation. Show solution
Student 3 300 mm 1000 mm 1400 mm 1000 mm 1600 mm 1800 mm 2000 mm Average distance for student 3 = Error for student 3= Standard deviation for student 3= Uncertainty for student 3=
z Scores LeBron James, one of the most successful basketball players of all time, has a height of 6 feet 8 inches, or 203 cm. Based on statistics from Data Set 1 “Body Data” in Appendix B, his height converts to the z score of 4.07. How many standard deviations is his height above the mean?

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