A publisher wants to estimate the mean length of time (in minutes) females spend reading fashion magazines aweek. To determine this estimate, the publisher takes a random sample of 30 females and asks how long theyspend reading fashion magazines a week. Given the descriptive statistics below, answer the following questions.Length of time (in minutes)Мean45Median35Standard Deviation12MinimumМаximum180Q120Q235Q390Count30 B. Using the descriptive statistics above, find the sample variance.

Measure of central tendency measures the central or average value of a dataset. Measures of…

Answered: Using the descriptive statistics above,…

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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Find the mean for the given data, 31,15,33,18,19
Find the (a) mean, (b) median, (c) mode, (d) midrange, (e) range, (f) variance, and (g) standard deviation. Please label your answers with a-g. The data that is shown below states the number of cookies each student ate at the bake sale. 1,1,2,3,5,3,5,7,3,3 Upload
QI. Define the Statistics.
The midterm and final exam grades for a statistics course are provided in the data set below. Jaymes, a student in the class, scored 86 on both exams. Treat the given data sets as samples. Midterm: 80, 78, 85, 82, 79, 79, 78, 86, 80, 84, 78, 84, 80, 84, 81, 78, 81, 82, 78, 84 Final: 81, 88, 68, 69, 69 81, 82, 86, 76, 71, 72, 68, 77, 86, 68, 83, 84, 71, 81, 87 z-score for midterm: 1.857 z-score for final: 1.181 Based on the z-scores calculated above, which of Jaymes's grades is more unusual, the midterm grade or the final exam grade? Select the correct answer below: A. The absolute value of the z-score for the final exam grade is greater than for the midterm grade, so the final exam grade is more unusual. B. The absolute value of the z-score for the midterm exam grade is less than for the final grade, so the midterm grade is more unusual. C. The absolute value of the z-score for the midterm exam grade is greater than for the final grade, so the midterm grade is more…
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The table below shows the overtime hours of the employees during a week. Overtime hours 0 1 2 3 4 5 Number of employees 3 8 6 4 2 2 Find the mean, median and mode of the observations.
In Exercises, we have provided simple data sets for you to practice the basics of finding a a.population mean.b.population standard deviation.1, 2, 4, 4
You want to know if male green darner dragonflies (Anax junius) are territorial so you collect data on how many dragonflies you find per square meter of shoreline around a 15 hectare pond. You collect data from 24 random square meter plots and count the number of male green darners in each plot. The data from each plot is below. Using the equation in the lab instructions, what is the Variance to Mean ratio? number of male green darners/square meter 8. 7 6. 6. 6. 7. 8 8. 81 8. 7 7 8. 6. Answer: 0.12
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