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Chapter 1: Q2-10BSC (page 1)

Identify whether the given value is a statistic or a parameter.

Birth Genders In the same study cited in the preceding exercise, 51% of the babies were girls.

Short Answer

Expert verified

The percentage of female babies out of 400 babies born is equal to 51% and represents a statistic.

Step by step solution

01

Given information

The percentage of babies that were girls from a sample of 400 babies is equal to 51%.

02

Statistic and parameter

A parameter is defined as a numerical value that describes a population. For example, 56% of toddlers in the United States say that their most preferred chocolate brand is Hershey鈥檚. The value of 56% represents the population proportion, so this is a parameter.

A statistic is defined as a numerical value that describes a sample. For example, out of 150 students who were surveyed, 47% played basketball. The value 47% represents the sample proportion, so this is a statistic.

03

Identification of a statistic or a parameter

Out of a sample of 400 babies born, the percentage of female babies equals 51%. The value of 51% represents the sample proportion. Therefore, 51% is astatistic.

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