1-9 questions asked A researcher theorizes that first-born children of African-A

Q: 1-9 questions asked A researcher theorizes that first-born children of African-A

Solution:- => The population of interest in this test: IQ of African American children => option D. Level of significance = 99%

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Question

1-9 questions asked A researcher theorizes that first-born children of African-American families are more intelligent than other African-American children. A sample of 50 first-born children of African-American families is found to have an average IQ of 105, while based on other studies we can assume that IQ of other African-American children is 100 on average and has standard deviation of 15. What is the population of interest in this study?

What level of significance do you choose for this test?

A. Level of significance = 50

B. Level of significance = 10

C. Level of significance = 95%

D. Level of significance = 99%

E. None of the above

Explanation / Answer

Solution:-

=> The population of interest in this test: IQ of African American children

=> option D. Level of significance = 99%

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