Children as young as 2 years of age, upon seeing an object placed under a pillow

Question

Children as young as 2 years of age, upon seeing an object placed under a pillow in a familiar setting at home, will understand to look for it after an interval of time and be able to find it. Investigators believe this capability will be less pronounced in a laboratory situation, where the child is away from the familiar setting of home. Let mt denote the proportion of 2-year-olds than have this understanding in the home situation, and suppose that Tu 35. The investigators wish to determine whether the proportion that remembers is less when the child is away from home. What is the appropriate null hypothesis? b) What is the appropriate alternative hypothesis? c) n your own words, distinguish between a Type I and a Type ll error in this context

Explanation / Answer

Q1. Null Hypothesis: There is no significant difference in the understanding capability of a children between familiar home situation and laboratory situation.

Q2. Alternative Hypothesis: There is a significant difference in the understanding capability of a children between familiar home situation and laboratory situation.

OR

The proportion of children that remembers is less when the child is away from home.

Q3. Type 1 error occured when we reject the null hypothesis but when it is true. Actually if the understanding capability of children does not change according to the surrounding and we still reject this hypothesis then Type 1 error occured.

Type 2: This error occured when we unable to reject the hypothesis although it is false.

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