AutoSave OffFilePaste+HomeXCutPage 1 of 2ClipboardInsert Draw DesignCopyFormat Painter5Times New Roma 12B IabX₂281 words 吸 Text Predictions: OnType here to searchNormal Distribution and Z score Homework - Compatibility ModeLayout ReferencesMailings Review View HelpAˆ A==↓¶Aa Ax ADAFontGAccessibility: Unavailable9i======CParagraph15Search (Alt+Q)AaBbCcDc AaBbCcDc AaBbC AaBbC AaBbC AaBbCcD AaBbCcD AaBb CcD AaBb CcD AaBbCcD1 No Spac... Heading 1 Heading 2Intense E... Strong¶ NormalTitleSubtitleSubtle Em...EmphasisSWRK110 Introduction to Introduction to Statistics for Social WorkersProfessor Serge LeeNormal Distribution and Z-ScoreOStylesHomework #2Part I.Assume that a group of people took the Sacramento County Social Service Worker exam inMarch 2022 to become a county employee. Sacramento County Personnel states that in order tobe competitive for the hiring, a test taker must score at least 90 percent on the test. Based on ascale from 0 to 100, it is reported that the average score among the test takers for 2021 was 82.5percent with a standard deviation of 8.76. Assume that Joe Potatoes scored 88 percent and Marythe Tree scored 92 percent. Please complete the following tasksW(1) Based on the bell-curve, fully justify why Joe Potatoes may not be invited for jobinterview and Mary the Tree may get an invitation letter.AaBb CcDQuotePriya PrasadFindReplaceSelect5 EditingFocusDictate80 EReuseFilesVoice Sensitivity Editor Reuse FilesFCommentsSensitivity70°F ClearShareEditor+ 100%7:57 PM10/20/2022

Part 1) Given: μ=82.5 σ=8.76 X~ Normally distributed (Bell Shaped) By empirical rule,

Answered: Part 1 Assume that a group of people…

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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Total enrollment in the Kalamazoo Public Schools have a mean and standard deviation of 11,957 and 13, respectively. The district expects growth in the next five years, so every observation in the dataset is multiplied by 1.5. What will the new mean be? 1) 7,971.33 2) 1.5 3) 11,957 4) 17,935.5 5) 11,958.5
1. According to one study, the average hours of sleep on a weeknight for men was 6.9 hours with a standard deviation of 1.5 hours. a. Find the proportion of men who sleep for more than 8 hours per night. b. Find the proportion of men who sleep for less than 6 hours per night. c. Find the proportion of men who sleep between 6-8 hours per night. d. Find the number of hours that represents the 90th percentile.
If the mean speed for a major league fast ball is 90 miles per hour and the standard deviation is 5 miles per hour, what would the standardized score be for a pitch that is 97 miles per hour? O 0.4 4.0 1.4 O 1.0
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The mean IQ of 200,000 current and past University of Manitoba students has been found to be 81.9. The standard deviation was found to be 13.1. The student enrollment at the University of Manitoba in 2016 was 29,987. The minimum IQ to be able to graduate from the University of Winnipeg has been found to be 104. Of the 29,987 students at the University of Manitoba in 2016, how many would be expected to be smart enough to graduate from the University of Winnipeg? Assume a Gaussian distribution.
In order to determine if air quality readings in a certain assembly plant were within OSHA guidelines, an engineer collected the following data: 108, 99, 84, 93, 80, 90, 83, 83, 96, 85, and 89 ppb (parts per billion). (a) Determine the arithmetic mean (by hand and spreadsheet). (b) Calculate the standard deviation (by hand and spreadsheet). (c) Determine the number of values and percentage of values that fall within ±1 standard deviation of the mean.
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