A researcher is interested in whether North Americans are able to identify emotions correctly in people from other cultures. It is known that, using a particular method of measurement, the accuracy ratings of adult North Americans in general are normally distributed with a mean of 82 and a variance of 20. This distribution is based on ratings made of emotions expressed by other North Americans. In the present study, however, the researcher arranges to test 50 adult North Americans rating emotions of individuals from Vulcan. The mean accuracy for these 50 individuals was 78. What should the researcher conclude? 1. A researcher is interested in whether North Americans are able to identifyemotions correctly in people from other cultures. It is known that, using aparticular method of measurement, the accuracy ratings of adult North Americansin general are normally distributed with a mean of 82 and a variance of 20. Thisdistribution is based on ratings made of emotions expressed by other NorthAmericans. In the present study, however, the researcher arranges to test 50 adultNorth Americans rating emotions of individuals from Vulcan. The mean accuracyfor these 50 individuals was 78. What should the researcher conclude?2THE HAUNTING ⒸA psychologic

Given information: The accuracy rating of adult North Americans follows X~Nμ=82,σ2=20. The sample…

Answered: 1. A researcher is interested in…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

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A researcher is interested in whether North Americans are able to identify emotions correctly in people from other cultures. It is known that, using a particular method of measurement, the accuracy ratings of adult North Americans in general are normally distributed with a mean of 82 and a variance of 20. This distribution is based on ratings made of emotions expressed by other North Americans. In the present study, however, the researcher arranges to test 50 adult North Americans rating emotions of individuals from Vulcan. The mean accuracy for these 50 individuals was 78. What should the researcher conclude?

1. A researcher is interested in whether North Americans are able to identify
emotions correctly in people from other cultures. It is known that, using a
particular method of measurement, the accuracy ratings of adult North Americans
in general are normally distributed with a mean of 82 and a variance of 20. This
distribution is based on ratings made of emotions expressed by other North
Americans. In the present study, however, the researcher arranges to test 50 adult
North Americans rating emotions of individuals from Vulcan. The mean accuracy
for these 50 individuals was 78. What should the researcher conclude?
2
THE HAUNTING Ⓒ
A psychologic

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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