Data Collected by Child Development Scientists Produced the Following 90

question 22

Multiple Choice

Data collected by child development scientists produced the following 90% confidence interval for the average age (in months) at which children say their first word: 10.2 < μ(age) < 13.5.

• A)90% of the children in this sample said their first word when they were between 10.2 and 13.5 months old.
• B)We are 90% sure that the average age at which children in this sample said their first word was between 10.2 and 13.5 months.
• C)Based on this sample,we can say,with 90% confidence,that the mean age at which children say their first word is between 10.2 and 13.5 months.
• D)We are 90% sure that a child will say his first word when he is between 10.2 and 13.5 months old.
• E)If we took many random samples of children,about 90% of them would produce this confidence interval.

---

Definitions:

Ottoman Turks

Refers to the people from the Ottoman Empire, a vast and powerful empire that spanned parts of Europe, Africa, and Asia from the late 13th century until its dissolution after World War I.

Gunpowder

A mixture of saltpeter, sulfur, and charcoal, used in the past as a propellant in firearms and as an explosive.

Invented

The act of creating, designing, or originating something that has never been made before.

Iberian Peninsula

A region in Southwest Europe, occupied by Spain and Portugal, known for its diverse geography, cultures, and historical significance.