The speed of greyhounds is normally distributed with a standard deviation of 0.15 mph. How many dogs do we need in our sample to estimate the mean speed of all greyhounds to within ±0.05 mph for a 95% confidence interval?- ○ 35 greyhounds- ○ 87 greyhounds- ○ 61 greyhounds- ○ 42 greyhounds

Population standard deviation()=0.15Margin of error(E)=0.05

Answered: The speed of greyhounds is normally…

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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In a study on running and happiness, runners indicated the number of miles they ran in a day and their subsequent score on a Happiness Survey (higher score = greater happiness). Runner # of miles (x) Happiness Score (y) 1 16 12 2 4 3 12 14 4 2 8 For these data: The mean of miles run is: 8.50 The mean of the Happiness scores is: 10.00 The standard deviation of the Miles scores is: 5.72 The standard deviation of the Happiness scores is: 3.16 In your submission, please include a copy of the SPSS or Excel output and answer the following: A. What is the r and r? value? B. Based on Pearson's r and r2 value, describe the relationship (direction/strength) that exists between # of miles run and Happiness scores. C. Create a scatterplot for the data using Excel or SPSS (include output in your submission). D. Insert the prediction line from Excel/SPSS on your scatterplot.
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The speed of greyhounds is normally distributed with a standard deviation of 0.15 mph. How many dogs do we need in our sample to estimate the mean speed of all greyhounds to within 0.05 mph for a 95% confidence interval? 35 greyhounds 87 greyhounds 61 greyhounds 42 greyhounds