A Worldwide Organizationof Academics Claims That The Mean

A worldwide organizationof academics claims that the mean IQ score of its members is 112, with a standard deviation of 17. A randomlyselected group of 40 members of this organization istested, and the results reveal that the mean IQ score in thissample is 114.6. If the organization’s claim is correct,what is the probability of having a sample mean of 114.6 or less for a random sample of this size?

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A worldwide organizationof academics claims that the mean

Question
A worldwide organizationof academics claims that the mean IQ score of its members is 112, with a standard deviation of 17. A randomlyselected group of 40 members of this organization istested, and the results reveal that the mean IQ score in thissample is 114.6. If the organization’s claim is correct,what is the probability of having a sample mean of 114.6 or less for a random sample of this size?

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