Homework SourseData collected by social service workers produced the follow
Data collected by social service workers produced the following 90% confidence interval for the average age (in months) at which children take their first step: (10.1 months, 13.4 months). Which statement correctly interprets this interval?
A. Based on this sample, we can say, with 90% confidence, that the mean age at which children take their first step is between 10.1 and 13.4 months.
B. 90% of the children in this sample took their first step when they were between 10.1 and 13.4 months old.
C. If we took many random samples of children, about 90% of them would produce this confidence interval.
D. We are 90% sure that a child will take their first step when he is between 10.1 and 13.4 months old.
| A. Based on this sample, we can say, with 90% confidence, that the mean age at which children take their first step is between 10.1 and 13.4 months. | ||
| B. 90% of the children in this sample took their first step when they were between 10.1 and 13.4 months old. | ||
| C. If we took many random samples of children, about 90% of them would produce this confidence interval. | ||
| D. We are 90% sure that a child will take their first step when he is between 10.1 and 13.4 months old. |
Solution
(A) is correct interpretation
