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

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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

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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