IQ levels: A study investigated whether there are differences between the mean IQ level of people who were reared by their biological parents and those who were reared by someone else. What is the null hypothesis in this case? Group of answer choices a. The mean IQ level of people who were reared by their biological parents is higher than the mean of those who were not. b. The mean IQ level of people who were reared by their biological parents is lower than the mean of those who were not. c. There is no difference between the mean IQ levels of people who were reared by their natural parents and those who were not. d. There is a difference between the mean IQ levels of people who were reared by their natural parents and those who were not.

Question

Mathematics

Cash

5 April, 10:56

IQ levels: A study investigated whether there are differences between the mean IQ level of people who were reared by their biological parents and those who were reared by someone else. What is the null hypothesis in this case? Group of answer choices a. The mean IQ level of people who were reared by their biological parents is higher than the mean of those who were not. b. The mean IQ level of people who were reared by their biological parents is lower than the mean of those who were not. c. There is no difference between the mean IQ levels of people who were reared by their natural parents and those who were not. d. There is a difference between the mean IQ levels of people who were reared by their natural parents and those who were not.

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Answers (2)

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Angel Williams · Answer 1

c. There is no difference between the mean IQ levels of people who were reared by their natural parents and those who were not.

Step-by-step explanation:

There is no difference between the mean IQ levels of people who were reared by their natural parents and those who were not.

Diana Rivers · Answer 2

C. There is no difference between the mean IQ levels of people who were reared by their natural parents and those who were not.

Step-by-step explanation:

In a statistical test, the hypothesis that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error is called null hypothesis.