One sample of scores has a mean of M = 45 and a sample size of n = 10 scores. A second sample of scores has M = 55 and n = 20. Find the weighted mean of the two samples. Group of answer choices Weighted Mean = 50.91 Weighted Mean = 50.00 Weighted Mean = 46.67 Weighted Mean = 51.67

One sample of scores has a mean of M = 45 and a sample size of n = 10 scores. A second sample of scores has M = 55 and n = 20. Find the weighted mean of the two samples. Group of answer choices Weighted Mean = 50.91 Weighted Mean = 50.00 Weighted Mean = 46.67 Weighted Mean = 51.67

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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Question

One sample of scores has a mean of M = 45 and a sample size of n = 10 scores. A second sample of scores has M = 55 and n = 20. Find the weighted mean of the two samples.

Group of answer choices

Weighted Mean = 50.91

Weighted Mean = 50.00

Weighted Mean = 46.67

Weighted Mean = 51.67

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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