SCENARIO 12-13 Recent Studies Have Found That American Children Are More Obese

question 164

Multiple Choice

SCENARIO 12-13
Recent studies have found that American children are more obese than in the past. The amount of time children spent watching television has received much of the blame. A survey of 100 ten-yearolds revealed the following with regards to weights and average number of hours a day spent watching television. We are interested in testing whether the mean number of hours spent watching TV and weights are independent at 1% level of significance.
-Referring to Scenario 12-12,to test whether there is any relationship between average time spent watching TV and average time spent reading story books,the value of the measured test statistic is

• A)-12.59
• B)1.61
• C)481.49
• D)1,368.06

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Definitions:

HashMap< K,V >

A class in Java that implements the Map interface, storing keys and values in a hash table, allowing for quick lookup, addition, and deletion of pairs.

String

Represents a sequence of characters, used to store and manipulate text in programming languages.

ArrayIndexOutOfBoundsException

A runtime exception thrown in Java to indicate that an array has been accessed with an illegal index, either negative or beyond its size.

Vector

A collection class in Java that implements a dynamic array, allowing elements to be added or removed and providing methods to manipulate the data.