According to the Government Accountability Office, 80% of all college students (ages 18 to 23) had health insurance in 2006. The Patient Protection and Affordable Care Act of 2010 allowed young people under age 26 to stay on their parents' health insurance policy. Has the proportion of college students (ages 18 to 23) who have health insurance increased since 2006? A survey of 800 randomly selected college students (ages 18 to 23) indicated that 83% of them had health insurance. Use a 0.05 level of significance.

Step 1: Determine the hypotheses.

• Null hypothesis:Ho:

• Alternative hypothesis: Ha:
Step 2: Find the mean and standard deviation.

• Using Mean =np • Standard deviation: Viti)Ti
Step 3: Calculate z- Value.
Z— P F<IMO
Step 4: Find the p-value for the above z using table 4.
Step 5: State a conclusion.