Using the IQ scores for the Twins, and the 7 steps of Hypothesis testing, test the idea that early adoption leads to higher IQ scores relative to later adoption using α = .05. 1. State Hypothesis in Words 2. State your Statistical Hypotheses 3. α 4. Decision Rule (Be sure to include your critical value) 5. Do your calculations 6. Make your decision 7. State your results in a sentence. Report your results in APA style. Be sure to include descriptive statistics (M & SD) and calculate Cohen's D as a measure of effect size. 8. Given your decision in #7, what error in hypothesis testing in possible? What does the measure of effect size tell us about the likelihood of this error? Be sure to explain your answer.
You are working for an adoption agency and want empirical support for the idea that early adoption (at birth) leads to better outcomes relative to later adoption (after age 3 years). Using hospital and agency records, you locate 6 pairs of identical twins - one adopted at birth and the other who remained in foster care until adoption at age 3 years. Now all of the twins are 5 years old and you administer a standardized IQ test to each. Using the data provided below, does early adoption lead to higher IQ scores relative to later adoption? Test this idea using the 7 steps with α = .05.
IQ Scores for Twins
| Twin | Early Adopt | Late Adopt |
|---|---|---|
| 1 | 105 | 103 |
| 2 | 99 | 97 |
| 3 | 112 | 105 |
| 4 | 101 | 99 |
| 5 | 124 | 104 |
| 6 | 100 | 110 |
Using the IQ scores for the Twins, and the 7 steps of Hypothesis testing, test the idea that early adoption leads to higher IQ scores relative to later adoption using α = .05.
1. State Hypothesis in Words
2. State your Statistical Hypotheses
3. α
4. Decision Rule (Be sure to include your critical value)
5. Do your calculations
6. Make your decision
7. State your results in a sentence. Report your results in APA style. Be sure to include
8. Given your decision in #7, what error in hypothesis testing in possible? What does the measure of effect size tell us about the likelihood of this error? Be sure to explain your answer.
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4. Decision Rule (Be sure to include your critical value)
5. Do your calculations
6. Make your decision
7. State your results in a sentence. Report your results in APA style. Be sure to include
8. Given your decision in #7, what error in hypothesis testing in possible? What does the measure of effect size tell us about the likelihood of this error? Be sure to explain your answer
by Bartleby ExpertYou are working for an adoption agency and want empirical support for the idea that early adoption (at birth) leads to better outcomes relative to later adoption (after age 3 years). Using hospital and agency records, you locate 6 pairs of identical twins - one adopted at birth and the other who remained in foster care until adoption at age 3 years. Now all of the twins are 5 years old and you administer a standardized IQ test to each. Using the data provided below, does early adoption lead to higher IQ scores relative to later adoption? Test this idea using the 7 steps with α = .05.
IQ Scores for Twins
| Twin | Early Adopt | Late Adopt |
|---|---|---|
| 1 | 105 | 103 |
| 2 | 99 | 97 |
| 3 | 112 | 105 |
| 4 | 101 | 99 |
| 5 | 124 | 104 |
| 6 | 100 | 110 |
4. Decision Rule (Be sure to include your critical value)
5. Do your calculations
6. Make your decision
7. State your results in a sentence. Report your results in APA style. Be sure to include
8. Given your decision in #7, what error in hypothesis testing in possible? What does the measure of effect size tell us about the likelihood of this error? Be sure to explain your answer.
by Bartleby Expert
