Explanation:
The test statistic for proportion is equal to:
[tex]z=\frac{p^{\prime}-p_{}}{\sqrt[]{\frac{p(1-p)}{n}}}[/tex]
Where p' is the sample proportion, p is the value in H0, and n is the size of the sample.
In this case, p = 0.72, n = 51 and p' can be calculated:
[tex]p^{\prime}=\frac{37}{51}=0.7255[/tex]
Then, replacing these values, we get:
[tex]undefined[/tex]
