Suppose we wanted to test the null hypothesis: \"Autistic children have lower IQ

Question

Suppose we wanted to test the null hypothesis: "Autistic children have lower IQ compared to the normal children." If we found from the sample data that the average IQ of autistic children is much higher than that of normal children, then we consider it as evidence against the null hypothesis. Answer: Explanation: We always phrase our research hypothesis as the null hypothesis. Answer: Explanation: We cannot prove the alternative hypothesis because it is always possible (although it may be unlikely) that the data we observe is simply due to chance. Answer: Explanation:

Explanation / Answer

9. Answer: Yes.

Explanation: If the sample data shows that the average is greater than normal children then reject the null as there is evidence against the null hypothesis.

10. Answer: Yes.

Explanation: The research hypothesis is always that hypothesis which is made when the researchers speculate upon the outcome of a research or experiment. Thus it is always the null hypothesis.

12.Answer: Yes.

Explanation: There is always sampling bias, so the deviation may be due to chance. So the alternative hypothesis is always possible.

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