A research study in 2019 showed that the prevalence of dietary supplement use among college students in UAE was 33%. This year, a random sample of 400 college students in UAE revealed that 157 of them...

A research study in 2019 showed that the prevalence of dietary supplement use among college students in UAE was 33%. This year, a random sample of 400 college students in UAE revealed that 157 of them are using dietry supplements. We are interested in testing whether the prevalence of dietary supplement use among college students in UAE has changed during COVID-19 pandemic. What is the value of the test statistic?
Round your answer to two decimal places.