Assignment:
Results from previous studies showed 79% of all high school seniors from a certain city plan to attend college after graduation. A random sample of 200 high school seniors from this city reveals that 162 plan to attend college. Does this indicate that the percentage has increased from that of previous studies? Test at the 5% level of significance.
1. State the null and alternative hypotheses.
A. H0: = .79, H1: > .79
B. H0: p = .79, H1: p ≠.79
C. H0: p ≤.79, H1: p > .79
D. H0: = .79, H1: > .79
Note that the symbol in A is u, population mean.
2. Compute the z or t value of the sample test statistic.
A. z = 0.69
B. t = 1.645
C. z = 1.96
D. z = 0.62
3. What is your conclusion?
A. Do not reject H0. There is not enough evidence to support the claim that the proportion of students planning to go to college is greater than .79.
B. Reject H0. There is enough evidence to support the claim that the proportion of students planning to go to college is now greater than .79.
C. Cannot determine
D. More seniors are going to college
4. What is the p-value associated with your test of hypothesis?
A. 0.7563
B. 0.6874
C. 0.4874
D. 0.2437