Question

. A local high school makes a change that should improve student satisfaction with the parking situation. Before the change, 37% of the students approved of the parking that was provided. After the change a random sample of students found that 83 of 200 students now approve of the new arrangement. The principal cites this as evidence that the change was effective. Use the .05 significance level.

a. H0 :

b. Ha:

c. Test statistic:

d. P-level

e. Critical value (beyond what z-score is the result significant? Use table or invnorm)

f. Conclusion:

g. What is the relevant confidence interval for this data? ( _________, ________)

Answer 1

Solution: