Number of pairs of observations of X and Y=8X series Arithmetic Mean 74-5X series Assumed Mean 69-0X series Standard Deviation=13.07Y series Arithmetic Mean=125-5Y series Assumed Mean=112-0Y series Standard Deviation=15.85%3D%3DSum of products of corresponding deviations of X and Yseries=+2176.Calculate the coefficient of correlation between X and Y series.

Answered: Image /qna-images/answer/d5a3df3d-e744-4bec-95bb-22740d70af48.jpg

Answered: Number of pairs of observations of X…

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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llMetro by T-Mobile X Group Work-Worksheet#1 on Ch... 1 of 2 Group Work-Worksheet#1 on Chapter 3 0.14% → 1. The Empirical Rule Based on Data Set 1" Body Data" in appendix B, blood platelet counts of women have a normal/bell-shaped distribution with a mean of 255.1 and a standard deviation of 65.4. (All units are 1000 cells/μL.) Using the empirical rule: -30 2.14% 1:40 PM 13.59% 99.73% 95.44% 68.26% 34.13% 34.13% 13.59% 77% 2.14% -20 -10 Mean lo 20 За a. 68.26% of women with platelet counts are within two standard deviations of the mean? The values are from ( b. 95.44% of women with platelet counts are within two standard deviations of the mean? The values are from ( 000 c. 99.73% of women with platelet counts are within two standard deviations of the mean? The values are from ( 0.14%
ymentld%3D5996521842592485862331174767&elSBN=9780357131596&id%3D144595592... Module 3 Ch 8 Calculation Assignment Score: 0.00% Save Submit Assignment for Grading Exercise 08.50 Algo (Population Mean: Sigma Unknown) « Question 7 of 15 Check My Work (2 remaining) The 94 million Americans of age 50 and over control 50 percent of all discretionary income. AARP estimated that the average annual expenditure on restaurants and carryout food was $1,878 for individuals in this age group. Suppose this estimate is based on a sample of 85 persons and that the sample standard deviation is 8510. Round your answers to the nearest whole numbers. a. At 99% confidence, what is the margin of error? b. What is the 99% confidence interval for the population mean amount spent on restaurants and carryout food? c. What is your estimate of the total amount spent by Americans of age 50 and over on restaurants and carryout food? million d. If the amount spent on restaurants and carryout food is skewed to the…
2
For a data set of the pulse rates for a sample of adult females, the lowest pulse rate is 31 beats per minute, the mean of the listed pulse rates is `x=79.0 beats per minute, and their standard deviation is s=14.7 beats per minute. a. What is the difference between the pulse rate of 31 beats per minute and the mean pulse rate of the females? b. How many standard deviations is that [the difference found in part (a)]? c. Convert the pulse rate of 31 beats per minutes to a z score. d. If we consider pulse rates that convert to z scores between −2 and 2 to be neither significantly low nor significantly high, is the pulse rate of 31 beats per minute significant?
A population of values has a normal distribution with μ=184.5μ=184.5 and σ=15.5σ=15.5. You intend to draw a random sample of size n=68n=68.Find P40, which is the mean separating the bottom 40% means from the top 60% means.P40 (for sample means) = Enter your answers as numbers accurate to 1 decimal place. Answers obtained using exact z-scores or z-scores rounded to 3 decimal places are accepted.
Question 14 of 20 - / 1 View Policies Current Attempt in Progress In a given year, the average score on the Mathematics portion of the ACT for males was 21.3 with standard deviation 5.3. The average score on the Mathematics portion of the ACT for females was 20.2 with standard deviation 4.8. If random samples are taken with 120 males and 105 females, find the standard error of the distribution of differences in sample means, Xm - Xf, where Im and f represent the sample means for males and females, respectively. Report your standard error with four decimal places. i Save for Later Attempts: 0 of 1 used Submit Answer MacBook Air DII 80 FS F6 F7 F2 F1 # $ % & @ 8. 1 2 3 4 Q W E R T Y H J K A S F M C V Comma **
A population of proportions has a distribution with p=0.8p=0.8 and σ=0.4σ=0.4. You intend to draw a random sample of size n=25n=25.According to the Central Limit Theorem: What is the mean of the distribution of sample means?ˆp=p^= ______________What is the standard deviation of the distribution of sample means?(Report answer accurate to 3 decimal places.)σˆp=______________
Plot the gamma distribution by fixing the shape parameter *k* = 3 and setting the scale parameter = 0.5, 1, 2, 3, 4, 5. What is the effect of increasing the scale parameter?
Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard deviation, σ, equal to 14. Approximately what percent of the population would be between 130 and 144? does anyone know how to work this using The empirical rule (68-95-99) I know how to do it the other way but not this way, and the empirical rule is the one needed for final

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