Answer:
Null hypothesis: The percentage of the members of the healthcare provider who received their flu shot is 48%
Alternate hypothesis: The percentage of the members of the healthcare provider who received their flu shot is not equal to 48%
Explanation:
A null hypothesis is a statement from the population parameter which is rejected or accepted (fail to reject) upon testing.
An alternate hypothesis is also a statement from the population parameter which negates the null hypothesis and is accepted if the null hypothesis is proven false.