7. Indicate whether the following isdiscrete or continuous.A. AgeB. Blood typeC. HeightD. Top 10 of the Civil EngineeringBoard ExamE. Overseas travel time8. Identification (Sampling techniques):A. Also known as accidentalsampling.B. The selection of the sample isbased on the criteria set by theresearcher that is related to the topicbeing studied.C. Most basic probability samplingtechniqueD. A method of selecting samplefrom a population that is large andwidely dispersed over a widegeographical area.E. A technique wherein initial samplemembers are asked to refer otherpeople who meet the criteriarequired by the researcher.

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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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2. State the type of sample being collected. The quality control officer at a manufacturing plant needs to determine what percentage of items in a batch are defective. The officer chooses every 15th batch off the line and counts the number of defective items in each chosen batch
Fill in the missing values for this ANOVA summary table: S.S. d.f. Between Within TOTAL 949.08 5 3501.08 834 M.S. F
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You are the operations manager for an airline and you are considering a higher fare level for passengers in aisle seats. How many randomly selected air passengers must you survey? Assume that you want to be 90% confident that the sample percentage is within 5.5 percentage points of the true population percentage. Complete parts (a) and (b) below. a. Assume that nothing is known about the percentage of passengers who prefer aisle seats. (Round up to the nearest integer.) b. Assume that a prior survey suggests that about 38% of air passengers prefer an aisle seat. (Round up to the nearest integer.)
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C6. How many hours per week do you spend on e-mail? Data are presented here for a GSS sample of 99 men and women, who each reported the number of hours they spent per week on e-mail. a. Compute the cumulative frequency and cumulative percentage distribution for the data. b. What proportion of the sample spent 3 hours or less per week on e-mail? C. What proportion of the sample spent 6 or more hours per week on e-mail? d. Construct a graph that best displays these data. Explain why the graph you selected is appropriate for these data. E-mail Hours per Week Frequency 19 20 1 13 2 2 4 6. 6. 2 8. 1 6. 23 10 or more 7.
A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 99% confident that his estimate is in error by no more than three percentage points? Complete parts (a) through (c) below. Question content area bottom Part 1 a) Assume that nothing is known about the percentage of computers with new operating systems. n=enter your response here (Round up to the nearest integer.) Part 2 b) Assume that a recent survey suggests that about 90% of computers use a new operating system. n=enter your response here (Round up to the nearest integer.) Part 3
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7. Indicate whether the following is discrete or continuous. A. Age B. Blood type C. Height D. Top 10 of the Civil Engineering Board Exam E. Overseas travel time 8. Identification (Sampling techniques):