A study was conducted to determine whether there was a difference in the number of employees who worked from home between 2019 and 2020. In 2019, a random sample of nā = 159 employees showed that 48 of them worked from home. In 2020, a random sample of nā = 143 employees showed that 72 of them worked from home. Do the data indicate that the population proportion of employees who worked from home in 2019 is different than those in 2020? Use a 1% level of significance. (a) What is the level of significance? 01 USE SALT State the null and alternate hypotheses. (Enter != for as needed.) Ho Hā