91Ó°ÊÓ

Population size is the number of individuals in a population. Population density is the typical number of individuals per unit of region or volume. The example of spacing of individuals in a population might be impacted by the characteristics of a species or its environment.

Identify the population to which the aftereffects of the review can be generalized:

It is given that, an arbitrary example of $25468$firstborn children included $13173$ young men. Here, all the examples of children are firstborn children.

In this manner, the gathered example will address the population of firstborn children.

Henceforth, the outcomes can be generalized to all firstborn children.

Calculating the null and alternative hypotheses,

${\mathrm{H}}_0:\mathrm{p}=0.5$

${\mathrm{H}}_1:\mathrm{p}>0.5$

As per the null hypothesis, boys are not more common than girls and as per the alternative hypothesis boys are more common than girls.

The sample size is n = $25468$

Specified characteristics are x = $13173$

The sample proportion of boys

$\stackrel{-}{p}=\frac{x}{n}=\frac{13173}{25468}=0.517$

It is a right-tailed hypothesis.

The null hypothesis is rejected as the p-value is equal to a and is not rejected when the p-value is greater than a.

Hence these data give convincing evidence that boys are more common than girls in the population.