According to a very large poll in 2015, about 90% of homes in California had access to the internet. Market researchers want to test if that proportion is now higher, so they take a random sample of 100 homes in California and find that 96 of them have access to the internet. The researchers will test H0:p=0.90 versus Ha:p>0.90, where p is the proportion of homes in California that have access to the internet.

Assuming that the conditions for inference have been met, calculate the test statistic for the their significance test.

z=