Final answer:
A software company is interested in improving customer satisfaction rate from the 80% currently claimed, the z-statistic is 1.454.
Step-by-step explanation:
The test statistic for a hypothesis test for a population proportion is typically the z-statistic.
To calculate the z-statistic, we first need to find the standard error, which is the square root of (p-hat * (1 - p-hat))/n,
where
p-hat is the sample proportion
n is the sample size.
In this case, the sample proportion is 96/113 = 0.8496 and the sample size is 113.
Plugging these values into the equation, we get the standard error as 0.0339.
The z-statistic is then calculated as (p-hat - p) / standard error
Where
p is the population proportion claimed by the software company.
In this case, p is 0.80.
Plugging in the values, we get (0.8496 - 0.80) / 0.0339 = 1.454.
So therefore the z-statistic is 1.454.